APA ציטוט

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

Trích dẫn kiểu Chicago

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

ציטוט MLA

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