Gaya APA
Sofian, A.
(2011).
Sinopsis obstetri : Obstetri operatif- obstetri sosial jilid 2
(
ed. 3)
.
Jakarta:
EGC.
Gaya MLA
Sofian, Amru.
"Sinopsis obstetri : Obstetri operatif- obstetri sosial jilid 2".
ed. 3
Jakarta:
EGC,
2011.
.