APA-viite

Humboldt, W. V. F. (1969). The limits of state action. University press.

Chicago-tyylinen lähdeviittaus

Humboldt, Wilhelm Von Freiherr. The Limits of State Action. Cambridge: University press, 1969.

MLA-viite

Humboldt, Wilhelm Von Freiherr. The Limits of State Action. University press, 1969.