Leviton, A.; Holmes, L. B.; Allred, E. N.; Vargas, J. (2002). „Methodologic issues in epidemiologic studies of congenital microcephaly”. Early Human Development. 69 (1): 91—105. doi:10.1016/S0378-3782(02)00065-8.
nih.gov
ncbi.nlm.nih.gov
Opitz, J. M.; Holt, M. C. (1990). „Microcephaly: general considerations and aids to nosology”. Journal of Craniofacial Genetics and Developmental Biology. 10 (2): 75—204. PMID2211965.