Deismireacht APA

Umland, J. B., & Jean B. Umland. (1999). General chemistry. Pacific Grove: Thomson Brooks/Cole.

Trích dẫn kiểu Chicago

Umland, Jean B., và Jean B. Umland. General Chemistry. Pacific Grove: Thomson Brooks/Cole, 1999.

Deismireacht MLA

Umland, Jean B., và Jean B. Umland. General Chemistry. Pacific Grove: Thomson Brooks/Cole, 1999.

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