Gaya APA
BASTON, H., Hall, J.
(2013).
Midwifery Essentials Antenatal vol.2
.
Jakarta:
EGC.
Gaya MLA
BASTON, Helen., Hall, Jennifer.
"Midwifery Essentials Antenatal vol.2".
Jakarta:
EGC,
2013.
Buku.