Gaya APA

Leveno, F, G, C, N, F, G, K, J. (2005). Obstetri Willams. 1 (Vol 1 . Edisi.21). Jakarta.: EGC.

Gaya MLA

Leveno, F, Gary, Cuningham., Norman, F, Gant., Keneth, J. "Obstetri Willams. 1". Vol 1 . Edisi.21 Jakarta.: EGC, 2005. Text.