Cita APA (7a ed.)

Kushlan, J. A., & Hafner, H. (2000). Heron conservation. Academic Press.

Cita Chicago Style (17a ed.)

Kushlan, James A., y Heinz Hafner. Heron Conservation. San Diego, CA: Academic Press, 2000.

Cita MLA (9a ed.)

Kushlan, James A., y Heinz Hafner. Heron Conservation. Academic Press, 2000.