Butler, D., Penniman, H. R., & Ranney, A. (1981). Democracy at the polls: A comparative study of competitive national elections. Washington DC: American Enterprise Institute for Public Policy Research.
Чикагска система за цитиранеButler, David, Howard Rae Penniman, и Austin Ranney. Democracy At the Polls: A Comparative Study of Competitive National Elections. Washington DC: American Enterprise Institute for Public Policy Research, 1981.
MLA формат за цитиранеButler, David, Howard Rae Penniman, и Austin Ranney. Democracy At the Polls: A Comparative Study of Competitive National Elections. Washington DC: American Enterprise Institute for Public Policy Research, 1981.
Внимание: Тези цитати може да не са 100% точни.