Gaya APA

Speroff, L., Darney, P, D. (2011). A Clinical Guide for Contraception Fifth Edition (5). Philadephia: Lippincot.

Gaya MLA

Speroff, Leon., Darney, Philip, D. "A Clinical Guide for Contraception Fifth Edition". 5 Philadephia: Lippincot, 2011. Text.