Gaya APA

cunningham, F., leveno, F, G, C, N, F, G, K, J. (). Wiiliam Obstetrics . [s.i.]: .

Gaya MLA

cunningham, F.gary., leveno, F., Garry, Cunningham,, Norman, F., Grant,, Kenneth, J.. "Wiiliam Obstetrics". [s.i.]: , . Text.