Cita APA (7a ed.)

Krebs, C. J. (1999). Ecology: The experimental analysis of distribution and abundance (4th ed.). Addison Wesley Longman.

Cita Chicago Style (17a ed.)

Krebs, Charles J. Ecology: The Experimental Analysis of Distribution and Abundance. 4th ed. Menlo Park, Calif.: Addison Wesley Longman, 1999.

Cita MLA (8a ed.)

Krebs, Charles J. Ecology: The Experimental Analysis of Distribution and Abundance. 4th ed. Addison Wesley Longman, 1999.