APA (7th ed.) Citation

Duverger, M., Pressure groups, & Wagover, R. (1972). Party politics and pressure groups: A comparative introduction. Thomas Nelson.

Chicago Style (17th ed.) Citation

Duverger, Maurice, Pressure groups, and Robert Wagover. Party Politics and Pressure Groups: A Comparative Introduction. London, Eng: Thomas Nelson, 1972.

MLA (9th ed.) Citation

Duverger, Maurice, et al. Party Politics and Pressure Groups: A Comparative Introduction. Thomas Nelson, 1972.