Gaya APA
et.all, M, E. (1995).
A Guide To Effective Care In Pregnancy And Childbirth (Second Edisi).
New York:
Oxford University.
Gaya MLA
et.all, Murray, Enkin..
"A Guide To Effective Care In Pregnancy And Childbirth".
Second Edisi
New York:
Oxford University,
1995.
Text.