APA Style

Cunningham, F, G. et al (2006). Obstetri Williams, Ed. 21, Vol. 1 (Ed. 21, Vol. 1). Jakarta: Penerbit Buku Kedokteran EGC.

MLA Style

Cunningham, F., Gary. et al. "Obstetri Williams, Ed. 21, Vol. 1". Ed. 21, Vol. 1 Jakarta: Penerbit Buku Kedokteran EGC, 2006. Maternitas.