APA (7th ed.) Citation

Ford, H. J. (1915). The natural history of the state: An introduction to political science. Princeton university press; [etc., etc.].

Chicago Style (17th ed.) Citation

Ford, Henry Jones. The Natural History of the State: An Introduction to Political Science. Princeton: Princeton university press; [etc., etc.], 1915.

MLA (8th ed.) Citation

Ford, Henry Jones. The Natural History of the State: An Introduction to Political Science. Princeton university press; [etc., etc.], 1915.