APA引文

Greenberg, E. S. (1977). The American political system: A radical approach. Winthrop Publishers.

Chicago Style (17th ed.) Citation

Greenberg, Edward S. The American Political System: A Radical Approach. Cambridge, Mass.: Winthrop Publishers, 1977.

MLA引文

Greenberg, Edward S. The American Political System: A Radical Approach. Winthrop Publishers, 1977.