APA aipamena

Krebs, C. J. (1999). Ecological methodology. Menlo Park, Calif: Benjamin/Cummings.

Chicago Style aipamena

Krebs, Charles J. Ecological Methodology. Menlo Park, Calif: Benjamin/Cummings, 1999.

MLA aipamena

Krebs, Charles J. Ecological Methodology. Menlo Park, Calif: Benjamin/Cummings, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.