Cita APA (7th ed.)

Riker, W. H. (1964). Federalism: Origin, operation, significance. Little.

Cita Chicago (17th ed.)

Riker, William H. Federalism: Origin, Operation, Significance. Boston: Little, 1964.

Cita MLA (9th ed.)

Riker, William H. Federalism: Origin, Operation, Significance. Little, 1964.