Gaya APA
Priadi, A.
(2009).
Biology 1 Senior High School Year X (Bilingual)
.
Yogyakarta:
Yudhistira.
Gaya MLA
Priadi, Arif.
"Biology 1 Senior High School Year X (Bilingual)".
Yogyakarta:
Yudhistira,
2009.
Text.