Wratten, S. D. (1980). Field and laboratory exercises in ecology. London: Arnold.
Trích dẫn kiểu ChicagoWratten, Stephen D. Field and Laboratory Exercises in Ecology. London: Arnold, 1980.
MLA引文Wratten, Stephen D. Field and Laboratory Exercises in Ecology. London: Arnold, 1980.
警告：這些引文格式不一定是100％准確.