Gaya APA

Cherry, S, H., Moss, D, G. (2004). UNDERSTANDING PREGNANCY AND CHILDBIRTH (fourth edition). Unites States of America: John Wiley and Sons.

Gaya MLA

Cherry, Sheldon, H.., Moss, Douglas, G.. "UNDERSTANDING PREGNANCY AND CHILDBIRTH". fourth edition Unites States of America: John Wiley and Sons, 2004. Text.