APA Format
Enkin, Murray W.;Keirse, Marc J.N.C.;Renfrew, Mary . (). A guide to effective care in pregnancy and childbirth. :
MLA Format
Enkin, Murray W.;Keirse, Marc J.N.C.;Renfrew, Mary . A guide to effective care in pregnancy and childbirth. : ,
Australian/Harvard Format
Enkin, Murray W.;Keirse, Marc J.N.C.;Renfrew, Mary . . A guide to effective care in pregnancy and childbirth. , 
Warning: These citations may not always be 100% accurate.