Cita APA (7th ed.)

Swartz, W. G. (1961). American governmental problems (2d ed.). Van Nostrand.

Cita Chicago (17th ed.)

Swartz, Willis G. American Governmental Problems. 2d ed. Princeton, N. J: Van Nostrand, 1961.

Cita MLA (9th ed.)

Swartz, Willis G. American Governmental Problems. 2d ed. Van Nostrand, 1961.