Halfon, E. (1979). Theoratical systems ecology. Academic Press.
Chicago Edition CitationHalfon, E. Theoratical Systems Ecology. New York: Academic Press, 1979.
MLA引文Halfon, E. Theoratical Systems Ecology. Academic Press, 1979.
警告：这些引文格式不一定是100％准确.
APA引文