Cita APA (7th ed.)

Krebs, C. J. (2009). Ecology: The experimental analysis of distribution and abundance (Sixth edition.). Pearson Benjamin Cummings.

Cita Chicago (17th ed.)

Krebs, Charles J. Ecology: The Experimental Analysis of Distribution and Abundance. Sixth edition. San Francisco: Pearson Benjamin Cummings, 2009.

Cita MLA (9th ed.)

Krebs, Charles J. Ecology: The Experimental Analysis of Distribution and Abundance. Sixth edition. Pearson Benjamin Cummings, 2009.