Gaya APA

Nicholas, F, H., Humenick, S, S. (2000). Childbirth education : practice, research and theory (Ed. 1). Philadelphia: W.B. Saunders Company.

Gaya MLA

Nicholas, Francine, H.., Humenick, Sharron, Smith. "Childbirth education : practice, research and theory". Ed. 1 Philadelphia: W.B. Saunders Company, 2000. Text.