APA (7th ed.) Citation

Current-García, E. (1965). O. Henry (William Sydney Porter). Twayne Publishers.

Chicago Style (17th ed.) Citation

Current-García, Eugene. O. Henry (William Sydney Porter). New York: Twayne Publishers, 1965.

MLA (8th ed.) Citation

Current-García, Eugene. O. Henry (William Sydney Porter). Twayne Publishers, 1965.