APA citiranje

Quigley, C. (1979). The evolution of civilizations: An introduction to historical analysis. Indianapolis: Liberty Press.

Trích dẫn kiểu Chicago

Quigley, Carroll. The Evolution of Civilizations: An Introduction to Historical Analysis. Indianapolis: Liberty Press, 1979.

MLA citiranje

Quigley, Carroll. The Evolution of Civilizations: An Introduction to Historical Analysis. Indianapolis: Liberty Press, 1979.