APA (7th ed.) Citation

Gardner, J. (1980). Freddy's book (2. pr.). Knopf.

Chicago Style (17th ed.) Citation

Gardner, John. Freddy's Book. 2. pr. New York: Knopf, 1980.

MLA (9th ed.) Citation

Gardner, John. Freddy's Book. 2. pr. Knopf, 1980.