APA (7th ed.) Citation

185510 Pennings, P., Keman, H., & Kleinnijenhuis, J. (2006). Doing research in political science. London : SAGE Publications.

Chicago Style (17th ed.) Citation

185510 Pennings, Paul, Hans Keman, and Jan Kleinnijenhuis. Doing Research in Political Science. London : SAGE Publications, 2006.

MLA (9th ed.) Citation

185510 Pennings, Paul, et al. Doing Research in Political Science. London : SAGE Publications, 2006.