Gaya APA
Sakala, E, P.
(2005).
USMLE STEP 2 CK: Lecture Notes
.
California:
Kaplan, Inc..
Gaya MLA
Sakala, Elmar, Peter.
"USMLE STEP 2 CK: Lecture Notes".
California:
Kaplan, Inc.,
2005.
Buku Text.