APA
Willoughby W., . (1903). Political theories of the ancient world. New York: Longmans Green & Company.
Chicago
Willoughby Westel.Woodbury, . 1903. Political theories of the ancient world. New York: Longmans Green & Company.
Harvard
Willoughby W., . (1903). Political theories of the ancient world. New York: Longmans Green & Company.
MLA
Willoughby Westel.Woodbury, . Political theories of the ancient world. New York: Longmans Green & Company. 1903.