Schumaker, P., Delehanty, W., Kiel, D. C., & Heilke, T. W. (2008). From ideologies to public philosophies: An introduction to political theory. Blackwell.
Lua i Stíl Chicago (17ú heag.)Schumaker, Paul, Will Delehanty, Dwight C. Kiel, agus Thomas W. Heilke. From Ideologies to Public Philosophies: An Introduction to Political Theory. Malden, Mass: Blackwell, 2008.
Lua MLA (9ú heag.)Schumaker, Paul, et al. From Ideologies to Public Philosophies: An Introduction to Political Theory. Blackwell, 2008.
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