Barzun, J., & Graff, H. F. (1977). The Modern Researcher (3d ed.). Harcourt Brace Jovanovich.
Tohutoru Kātū Chicago (17th ed.)Barzun, Jacques, me Henry F. Graff. The Modern Researcher. 3d ed. New York: Harcourt Brace Jovanovich, 1977.
Tohutoro MLA (9th ed.)Barzun, Jacques, me Henry F. Graff. The Modern Researcher. 3d ed. Harcourt Brace Jovanovich, 1977.
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