APA (7th ed.) Zitazioa
Downs, A. (1957). An economic theory of democracy. Harper & Row.
Chicago Style (17th ed.) Zitazioa
Downs, Anthony. An Economic Theory of Democracy. New York: Harper & Row, 1957.
MLA (9th ed.) Zitazioa
Downs, Anthony. An Economic Theory of Democracy. Harper & Row, 1957.
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