Pennings, P., Keman, H., & Kleinnijenhuis, J. (1999). Doing research in political science: An introduction to comparative methods and statistics. SAGE Publications.
Цитирование в стиле Чикаго (17-е изд.)Pennings, Paul, Hans Keman, и J. Kleinnijenhuis. Doing Research in Political Science: An Introduction to Comparative Methods and Statistics. London: SAGE Publications, 1999.
Цитирование MLA (9-е изд.)Pennings, Paul, et al. Doing Research in Political Science: An Introduction to Comparative Methods and Statistics. SAGE Publications, 1999.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.