APA استشهاد

Allaby, M. (1996). Basics of environmental science (2nd ed.). Routledge.

استشهاد بنمط شيكاغو

Allaby, Michael. Basics of Environmental Science. 2nd ed. London: Routledge, 1996.

MLA استشهاد

Allaby, Michael. Basics of Environmental Science. 2nd ed. Routledge, 1996.