Gaya APA

Yen, S, S, C., Jaffe, R, B. (1991). Reproductive Endocrinology (Ed.3). Philadelphia: W.B.Saunders Company.

Gaya MLA

Yen, Samuel, S., C.., Jaffe, Robert, B. "Reproductive Endocrinology". Ed.3 Philadelphia: W.B.Saunders Company, 1991. Text.