Dyfyniad APA

Norwitz, E. R., & Schorge, J. O. (2013). Obstetrics and gynecology at a glance (4th ed.). John Wiley & Sons, Ltd..

Dyfyniad Arddull Chicago

Norwitz, Errol R., and John O. Schorge. Obstetrics and Gynecology at a Glance. 4th ed. Chichester, West Sussex, UK: John Wiley & Sons, Ltd., 2013.

Dyfyniad MLA

Norwitz, Errol R., and John O. Schorge. Obstetrics and Gynecology at a Glance. 4th ed. John Wiley & Sons, Ltd., 2013.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.