Gaya APA
Eastman, N, J.
(1956).
Obstetrics
(
Ed. 11)
.
Newyork:
Appleton Century Crofts.
Gaya MLA
Eastman, Nicholson, J..
"Obstetrics".
Ed. 11
Newyork:
Appleton Century Crofts,
1956.
Buku.