Cita APA (7th ed.)

Johnson, G. B., & Raven, P. H. (2007). Holt California biology. Holt, Rinehart and Winston.

Cita Chicago (17th ed.)

Johnson, George B., i Peter H. Raven. Holt California Biology. Orlando, FL: Holt, Rinehart and Winston, 2007.

Cita MLA (9th ed.)

Johnson, George B., i Peter H. Raven. Holt California Biology. Holt, Rinehart and Winston, 2007.