Παραπομπή APA

Wallace, G. (1975). Introduction to ornithology. Macmillan Company.

Παραπομπή Chicago Style

Wallace, G.J. Introduction to Ornithology. New York: Macmillan Company, 1975.

Παραπομπή MLA

Wallace, G.J. Introduction to Ornithology. Macmillan Company, 1975.