Gregg, D. C. (1958). Principles of chemistry. Allyn and Bacon.
Chicago Style (17. basım) AtıfGregg, Donald Crowther. Principles of Chemistry. Boston: Allyn and Bacon, 1958.
MLA (9th ed.) AtıfGregg, Donald Crowther. Principles of Chemistry. Allyn and Bacon, 1958.
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