Gaya APA
Nichols, F, H., Humenick, S, S. (2000).
Childbirth Education Practice, Research and Theory .
Pennysylvania:
Saunders Company.
Gaya MLA
Nichols, Francine, H.., Humenick, Sharron, Smith.
"Childbirth Education Practice, Research and Theory".
Pennysylvania:
Saunders Company,
2000.
Buku Text.