Heller, L. et al.(1991).Gawat Darurat Ginekologi dan Obstetri (Emergencies In Gynecology and Obstetrics) (Cet. 01).Geneva:Penerbit Buku Kedokteran EGC.
Gaya MLA
Heller, L. et al..Gawat Darurat Ginekologi dan Obstetri (Emergencies In Gynecology and Obstetrics).Cet. 01Geneva:Penerbit Buku Kedokteran EGC,1991..