Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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