APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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