Gaya APA

Johnson, G, B., Raven, P, H. (2006). BIOLOGY (Seventh Edition). Holt, Rinehart, and Winston: HOLT.

Gaya MLA

Johnson, George, B.., Raven, Peter, H.. "BIOLOGY". Seventh Edition Holt, Rinehart, and Winston: HOLT, 2006. E-Book.