APA استشهاد

Davies, J. (1973). scientific approach (2nd ed.). Academic Press.

استشهاد بنمط شيكاغو

Davies, J.T. Scientific Approach. 2nd ed. New York: Academic Press, 1973.

MLA استشهاد

Davies, J.T. Scientific Approach. 2nd ed. Academic Press, 1973.