APA সাইটেশন

Halfon, E. (1979). Theoratical systems ecology. Academic Press.

শিকাগো স্টাইলে সাইটেশন

Halfon, E. Theoratical Systems Ecology. New York: Academic Press, 1979.

এমএলএ সাইটেশন

Halfon, E. Theoratical Systems Ecology. Academic Press, 1979.