APA-viite

Wolff, J. (2016). An introduction to political philosophy (3rd ed.). Oxford university press.

Chicago-tyylinen lähdeviittaus

Wolff, Jonathan. An Introduction to Political Philosophy. 3rd ed. UK: Oxford university press, 2016.

MLA-viite

Wolff, Jonathan. An Introduction to Political Philosophy. 3rd ed. Oxford university press, 2016.