Gaya APA

et.al, ., Cunningham, F, G. (2025). Obstetri William, Ed. 25, Vol. 2 (Ed. 25). : EGC.

Gaya MLA

et.al, ., Cunningham, F., Gary. "Obstetri William, Ed. 25, Vol. 2". Ed. 25 : EGC, 2025. Text.