Citazione Stile APA (7a Edizione)

Hanna, P. R., Kohn, C. F., & Steeg, C. L. V. (1971). Political science: Modular learning unit (United States studies.). Scott, Foresman.

Citazione stile Chigago Style (17a edizione)

Hanna, Paul R., Clyde F. Kohn, e Clarence L. Ver Steeg. Political Science: Modular Learning Unit. United States studies. Glenview, Ill: Scott, Foresman, 1971.

Citatione MLA (9a ed.)

Hanna, Paul R., et al. Political Science: Modular Learning Unit. United States studies. Scott, Foresman, 1971.