Gaya APA

Cunningham, F, G. et al (2017). Obstetri Williams volume 2 ed. 23 th. 2017 (MKB) (23 - 2017). Jakarta: .

Gaya MLA

Cunningham, F., Gary. et al. "Obstetri Williams volume 2 ed. 23 th. 2017 (MKB)". 23 - 2017 Jakarta: , 2017. Text.