APA (7th ed.) Citation

KREBS, C. J. (1999). Ecological methodology.-- Ed.2. An Imprint of Addison Wesley Longman.

Chicago Style (17th ed.) Citation

KREBS, Charles J. Ecological Methodology.-- Ed.2. California: An Imprint of Addison Wesley Longman, 1999.

MLA (9th ed.) Citation

KREBS, Charles J. Ecological Methodology.-- Ed.2. An Imprint of Addison Wesley Longman, 1999.