APA (7th ed.) Zitazioa
Bird, G. L. (1956). Article writing and marketing. Rinehart.
Chicago Style (17th ed.) Zitazioa
Bird, George L. Article Writing and Marketing. New York: Rinehart, 1956.
MLA (9th ed.) Zitazioa
Bird, George L. Article Writing and Marketing. Rinehart, 1956.
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