Παραπομπή APA

Butt , W. .. R. (1976). Hormone chemistry (2nd ed.). John wiley & sons.

Παραπομπή Chicago Style

Butt , W . R. Hormone Chemistry. 2nd ed. New York: John wiley & sons, 1976.

Παραπομπή MLA

Butt , W . R. Hormone Chemistry. 2nd ed. John wiley & sons, 1976.