APA (7th ed.) Citation

Walker, I. M. (1970). Mark Twain. Humanities Press.

Chicago Style (17th ed.) Citation

Walker, I. M. Mark Twain. New York: Humanities Press, 1970.

MLA (8th ed.) Citation

Walker, I. M. Mark Twain. Humanities Press, 1970.

Warning: These citations may not always be 100% accurate.