Gaya APA

Widayanti, H., Krishnayanti, I, N. (2003). Bioteknologi (i, 2003). Yogyakarta: Insist Press.

Gaya MLA

Widayanti, Hesty., Krishnayanti, Ika, N. "Bioteknologi". i, 2003 Yogyakarta: Insist Press, 2003. Text books.