APA (7th ed.) Citation

Clarke, E. L. (1929). The art of straight thinking: A primer of scientific method for social inquiry. Appleton-Century.

Chicago Style (17th ed.) Citation

Clarke, Edwin Leavitt. The Art of Straight Thinking: A Primer of Scientific Method for Social Inquiry. New York: Appleton-Century, 1929.

MLA (9th ed.) Citation

Clarke, Edwin Leavitt. The Art of Straight Thinking: A Primer of Scientific Method for Social Inquiry. Appleton-Century, 1929.