Παραπομπή APA

Caldwell, G. L. (1963). American Government today. W.W. Norton.

Παραπομπή Chicago Style

Caldwell, Gaylon L. American Government Today. New York: W.W. Norton, 1963.

Παραπομπή MLA

Caldwell, Gaylon L. American Government Today. W.W. Norton, 1963.