Dyfyniad APA

Zumdal, S. S. (1995). Chemical Principles (2nd.). D.C. Health and Company.

Dyfyniad Arddull Chicago

Zumdal, Steven S. Chemical Principles. 2nd. Massachusetts, Toronto: D.C. Health and Company, 1995.

Dyfyniad MLA

Zumdal, Steven S. Chemical Principles. 2nd. D.C. Health and Company, 1995.

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