APA (7th ed.) Citation

De Ropp, R. S. (1956). If I forget thee. St. Martin's Press.

Chicago Style (17th ed.) Citation

De Ropp, Robert S. If I Forget Thee. New York: St. Martin's Press, 1956.

MLA (9th ed.) Citation

De Ropp, Robert S. If I Forget Thee. St. Martin's Press, 1956.