Dyfyniad APA

Pennings, P., Keman, H., & Kleinnijenhuis, J. (1999). Doing research in political science: An introduction to comparative methods and statistics. SAGE Publications.

Dyfyniad Arddull Chicago

Pennings, Paul, Hans Keman, and J. Kleinnijenhuis. Doing Research in Political Science: An Introduction to Comparative Methods and Statistics. London: SAGE Publications, 1999.

Dyfyniad MLA

Pennings, Paul, et al. Doing Research in Political Science: An Introduction to Comparative Methods and Statistics. SAGE Publications, 1999.

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