Gaya APA
Lumbanraja, S, N.
(2017).
KEGAWATDARURATAN OBSTETRI
.
Medan:
USU PRESS-MEDAN.
Gaya MLA
Lumbanraja, Sarma, N..
"KEGAWATDARURATAN OBSTETRI".
Medan:
USU PRESS-MEDAN,
2017.
Electronic Resource.