Cita APA

Krebs, C. J. (1999). Ecological methodology (2. ed.). New York: Harper Collins.

Citación estilo Chicago

Krebs, Charles J. Ecological Methodology. 2. ed. New York: Harper Collins, 1999.

Cita MLA

Krebs, Charles J. Ecological Methodology. 2. ed. New York: Harper Collins, 1999.