APA (7th ed.) Citation

Pennings, Keman, & Kleinnijenhuis. (2006). Doing research in political science (2nd ed.). Sage Publications.

Chicago Style (17th ed.) Citation

Pennings, Keman, and Kleinnijenhuis. Doing Research in Political Science. 2nd ed. London: Sage Publications, 2006.

MLA (9th ed.) Citation

Pennings, et al. Doing Research in Political Science. 2nd ed. Sage Publications, 2006.

Warning: These citations may not always be 100% accurate.