Gaya APA

Sokol, T, L, G, R, J. (1989). Intrauterine growth retardation a practical approach . Chicago: Year Book Medical Pub., Inc..

Gaya MLA

Sokol, Thomas, L., Gross,, Robert, J.. "Intrauterine growth retardation a practical approach". Chicago: Year Book Medical Pub., Inc., 1989. Text.