Gaya APA
A., S., Sukirman, .
(2008).
Biology For Junior High School Year VII Jilid 1
.
Jakarta ::
Yudhistira.
Gaya MLA
A., Suyitno., Sukirman, .
"Biology For Junior High School Year VII Jilid 1".
Jakarta ::
Yudhistira,
2008.
Text.