Gaya APA

CUNNINGHAM, F, G, [. et al (2006). OBSTETRI williams, volume 1 (Ed. ke 21.). Jakarta: EGC.

Gaya MLA

CUNNINGHAM, F., Gary, [et.al.]. et al. "OBSTETRI williams, volume 1". Ed. ke 21. Jakarta: EGC, 2006. Buku.