APA (7th ed.) Citation

Estes, R. J. (1984). The social progress of nations. Praeger.

Chicago Style (17th ed.) Citation

Estes, Richard J. The Social Progress of Nations. New York u.a: Praeger, 1984.

MLA (9th ed.) Citation

Estes, Richard J. The Social Progress of Nations. Praeger, 1984.