Rourke, J. T., Hiskes, R. P., & Zirakzadeh, C. E. (1992). Direct democracy and international politics: Deciding international issues through referendums. Lynne Rienner.
Lua i Stíl Chicago (17ú heag.)Rourke, John T., Richard P. Hiskes, agus Cyrus Ernesto Zirakzadeh. Direct Democracy and International Politics: Deciding International Issues Through Referendums. Boulder, Colo.: Lynne Rienner, 1992.
Lua MLA (8ú heag.)Rourke, John T., et al. Direct Democracy and International Politics: Deciding International Issues Through Referendums. Lynne Rienner, 1992.
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