Cita APA (7a ed.)

Krebs, C. J. (1999). Ecological methodology (2nd ed.). Benjamin/Cummings.

Cita Chicago Style (17a ed.)

Krebs, Charles Joseph. Ecological Methodology. 2nd ed. Menlo Park, Calif.: Benjamin/Cummings, 1999.

Cita MLA (9a ed.)

Krebs, Charles Joseph. Ecological Methodology. 2nd ed. Benjamin/Cummings, 1999.