APA (7th ed.) Zitazioa

Fletcher, J. (1984). Information sources in economics (2nd ed.). Butterworths.

Chicago Style (17th ed.) Zitazioa

Fletcher, John. Information Sources in Economics. 2nd ed. London ; Boston: Butterworths, 1984.

MLA (9th ed.) Zitazioa

Fletcher, John. Information Sources in Economics. 2nd ed. Butterworths, 1984.

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