Gaya APA

[et.al], F, G, C. et al (2012). Obstetri wiliams, Volume 2 (Ed.23). Jakarta: Salemba Medika.

Gaya MLA

[et.al], F., Gary, Cunningham. et al. "Obstetri wiliams, Volume 2". Ed.23 Jakarta: Salemba Medika, 2012. Kesehatan Masyarakat.