APA (7th ed.) Citation

Sukirman & A, S. (2009). Biology 1 for junior high school year VII. Salemba Empat.

Chicago Style (17th ed.) Citation

Sukirman and Suyitno A. Biology 1 for Junior High School Year VII. Salemba Empat, 2009.

MLA (8th ed.) Citation

Sukirman and Suyitno A. Biology 1 for Junior High School Year VII. Salemba Empat, 2009.

Warning: These citations may not always be 100% accurate.