Cita APA

Willoughby, W. W., & Rogers, L. (1923). Introduction to the problem of government. New York: Doubleday.

Citación estilo Chicago

Willoughby, Westel W., and Lindsay Rogers. Introduction to the Problem of Government. New York: Doubleday, 1923.

Cita MLA

Willoughby, Westel W., and Lindsay Rogers. Introduction to the Problem of Government. New York: Doubleday, 1923.