Cita APA (7th ed.)

Roche, J. P., & Levy, L. W. (1964). Parties and pressure groups. Harcourt, Brace & World.

Cita Chicago (17th ed.)

Roche, John Pearson, i Leonard Williams Levy. Parties and Pressure Groups. New York: Harcourt, Brace & World, 1964.

Cita MLA (9th ed.)

Roche, John Pearson, i Leonard Williams Levy. Parties and Pressure Groups. Harcourt, Brace & World, 1964.