Cita APA (7th ed.)

PIANKA, E. R. (2000). Evolutionary ecology.-- Ed.6. An Imprint of Ad. Wesley Longman.

Cita Chicago (17th ed.)

PIANKA, Eric R. Evolutionary Ecology.-- Ed.6. San Francisco: An Imprint of Ad. Wesley Longman, 2000.

Cita MLA (9th ed.)

PIANKA, Eric R. Evolutionary Ecology.-- Ed.6. An Imprint of Ad. Wesley Longman, 2000.