Robert E Ricklifs. (1990). Ecology. New York: W.H. Freeman and Co.
Trích dẫn kiểu ChicagoRobert E Ricklifs. Ecology. New York: W.H. Freeman and Co, 1990.
MLA引文Robert E Ricklifs. Ecology. New York: W.H. Freeman and Co, 1990.
警告：这些引文格式不一定是100％准确.
APA引文