APA
(1990). Fertility and Sterility:Official Journal of the America Fertility Society. American: American Fertility Society.
Chicago
1990. Fertility and Sterility:Official Journal of the America Fertility Society. American: American Fertility Society.
Harvard
(1990). Fertility and Sterility:Official Journal of the America Fertility Society. American: American Fertility Society.
MLA
Fertility and Sterility:Official Journal of the America Fertility Society. American: American Fertility Society. 1990.
