1. Graven SN, Browne JV. Auditory development in the fetus and infant. Newborn and infant nursing reviews. 2008;8(4):187-93.##
2. Hans J, Yamada S, Shiota K, van der Vliet T. Overview of the development of the human brain and spinal cord. Clinical neuroembryology: Springer; 2014. p. 1-52. ##
3. Kier EL, Fulbright RK, Bronen RA. Limbic lobe embryology and anatomy: dissection and MR of the medial surface of the fetal cerebral hemisphere. American journal of neuroradiology. 1995;16(9):1847-53. ##
4. Prayer D, Kasprian G, Krampl E, Ulm B, Witzani L, Prayer L, et al. MRI of normal fetal brain development. European journal of radiology. 2006;57(2):199-216. ##
5. Sokolowski K, Corbin JG. Wired for behaviors: from development to function of innate limbic system circuitry. Frontiers in molecular neuroscience. 2012;5:55. ##
6. Joseph R. Fetal brain behavior and cognitive development. Developmental review. 2000;20(1):81-98. ##
7. Prechtl HF. Continuity of neural functions from prenatal to postnatal life: Cambridge University Press; 1991. ##
8. Werner L, Fay RR, Popper AN. Human auditory development: Springer Science & Business Media; 2011. ##
9. Huotilainen M, Kujala A, Hotakainen M, Parkkonen L, Taulu S, Simola J, et al. Short-term memory functions of the human fetus recorded with magnetoencephalography. Neuroreport. 2005;16(1):81-4. ##
10. Northern JL, Downs MP. Hearing in Children: Plural Publishing; 2014. ##
11. Moore JK, Linthicum Jr FH. The human auditory system: a timeline of development. International journal of audiology. 2007;46(9):460-78. ##
12. Shahidullah S, Hepper PG. Frequency discrimination by the fetus. Early Human Development. 1994;36(1):13-26. ##
13. Hepper PG, Shahidullah BS. The development of fetal hearing. Fetal and Maternal Medicine Review. 1994;6(3):167-79. ##
14. Webb AR, Heller HT, Benson CB, Lahav A. Mother’s voice and heartbeat sounds elicit auditory plasticity in the human brain before full gestation. Proceedings of the National Academy of Sciences. 2015:201414924. ##
15. Hepper PG. Fetal memory: does it exist? What does it do? Acta Paediatrica. 1996;85:16-20. ##
16. Hepper PG. An examination of fetal learning before and after birth. The Irish journal of psychology. 1991;12(2):95-107. ##
17. Sohmer H, Freeman S. Functional development of auditory sensitivity in the fetus and neonate. Journal of basic and clinical physiology and pharmacology. 1995;6(2):95-108. ##
18. Litovsky R. Development of the auditory system. Handbook of clinical neurology. 129: Elsevier; 2015. p. 55-72. ##
19. Gonzalez-Gonzalez N, Suarez M, Perez-Piñero B, Armas H, Domenech E, Bartha J. Persistence of fetal memory into neonatal life. Acta obstetricia et gynecologica Scandinavica. 2006;85(10):1160-4. ##
20. Pino O. Fetal memory: the effects of prenatal auditory experience on human development. BAOJ Med Nursing. 2016;2:3. ##
21. Dirix CE, Nijhuis JG, Jongsma HW, Hornstra G. Aspects of fetal learning and memory. Child Development. 2009;80(4):1251-8. ##
22. Ray WS. A preliminary report on a study of fetal conditioning. Child Development. 1932;3(2):175-7.
23. Spelt DK. The conditioning of the human fetus in utero. Journal of Experimental Psychology. 1948;38(3):338.
24. Hepper PG, Shahidullah S. Habituation in normal and Down's syndrome fetuses. The Quarterly Journal of Experimental Psychology Section B. 1992;44(3-4b):305-17. ##
25. Leader LR, Baillie P, Martin B, Vermeulen E. The assessment and significance of habituation to a repeated stimulus by the human fetus. Early human development. 1982;7(3):211-9. ##
26. Den Ouden L, Rijken M, Brand R, Verloove-Vanhorick SP, Ruys JH. Is it correct to correct? Developmental milestones in 555 “normal” preterm infants compared with term infants. The Journal of pediatrics. 1991;118(3):399-404. ##
27. Kover ST, McCary LM, Ingram AM, Hatton DD, Roberts JE. Language development in infants and toddlers with fragile X syndrome: Change over time and the role of attention. American journal on intellectual and developmental disabilities. 2015;120(2):125-44. ##
28. Sajaniemi N, Hakamies-Blomqvist L, Mäkelä J, Avellan A, Rita H, Von Wendt L. Cognitive development, temperament and behavior at 2 years as indicative of language development at 4 years in pre-term infants. Child psychiatry and human development. 2001;31(4):329-46. ##
29. Oberklaid F, Drever K. Is my child normal?: Milestones and red flags for referral. Australian family physician. 2011;40(9):666. ##
30. Coplan J, Gleason JR. Quantifying language development from birth to 3 years using the Early Language Milestone Scale. Pediatrics. 1990;86(6):963-71. ##
31. Taanila A, Murray GK, Jokelainen J, Isohanni M, Rantakallio P. Infant developmental milestones: a 31-year follow-up. Developmental medicine and child neurology. 2005;47(9):581-6. ##
32. Development Milestones Birth to Eight Years - Hearing First. ##
)