Gaya APA

Billingham, K, A. (1982). Developmental Psychology for The Health Care Professions. Part 1- Prenatal Through Adolescent Development . Colorado: Westviw Press.

Gaya MLA

Billingham, Katherine, A.. "Developmental Psychology for The Health Care Professions. Part 1- Prenatal Through Adolescent Development". Colorado: Westviw Press, 1982. Text.