APA (7 वां संस्करण) प्रशस्ति पत्र
Bowler, S., & Donovan, T. (2000). Demanding choices: Opinion, voting, and direct democracy (1st pbk. ed.). University of Michigan Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Bowler, Shaun, और Todd Donovan. Demanding Choices: Opinion, Voting, and Direct Democracy. 1st pbk. ed. Ann Arbor: University of Michigan Press, 2000.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Bowler, Shaun, और Todd Donovan. Demanding Choices: Opinion, Voting, and Direct Democracy. 1st pbk. ed. University of Michigan Press, 2000.
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