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