Gaya APA
speroff, L. (1999).
Clinical Gynecologic Endocrinology and Infertility (Sixth Edition).
Baltimore:
Lippincott Williams & Wilkins.
Gaya MLA
speroff, Leon.
"Clinical Gynecologic Endocrinology and Infertility".
Sixth Edition
Baltimore:
Lippincott Williams & Wilkins,
1999.
Text.