MLA

Harris, Robert Taylor, and James Louis Jarrett. Language and Informal Logic. 1e ed. New York (N.Y.): Longmans, Green, 1956.

APA

Harris, R. Taylor, & Jarrett, J. Louis. (1956). Language and informal logic. 1e ed. New York (N.Y.): Longmans, Green.

Chicago

Harris, Robert Taylor, and James Louis Jarrett. Language and Informal Logic. 1e ed. New York (N.Y.): Longmans, Green, 1956.