APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (8:e uppl.)

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