APA ציטוט

Robert E Ricklefs. (1990). Ecology. New York: W. H. Freeman.

Trích dẫn kiểu Chicago

Robert E Ricklefs. Ecology. New York: W. H. Freeman, 1990.

ציטוט MLA

Robert E Ricklefs. Ecology. New York: W. H. Freeman, 1990.