Παραπομπή σε μορφή APA (7η εκδ.)

Tickle, A. (1995). Ecology and the environment: A look of ecosystems of the world. University of Michigan Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Tickle, Amy. Ecology and the Environment: A Look of Ecosystems of the World. USA: University of Michigan Press, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

Tickle, Amy. Ecology and the Environment: A Look of Ecosystems of the World. University of Michigan Press, 1995.