APA (7th ed.) Citation

Gregory, S. T. E. G. (1968). Tariffs: A study in methods. A.M. Kelley.

Chicago Style (17th ed.) Citation

Gregory, Sir Theodor Emanuel Gugenheim. Tariffs: A Study in Methods. New York: A.M. Kelley, 1968.

MLA (9th ed.) Citation

Gregory, Sir Theodor Emanuel Gugenheim. Tariffs: A Study in Methods. A.M. Kelley, 1968.

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