Hardwick, E. R. (1993). Introduction to chemistry (Extended edition.). Harcourt Brace Jovanovich.
Chicago-viite (17. p.)Hardwick, E. Russell. Introduction to Chemistry. Extended edition. San Diego: Harcourt Brace Jovanovich, 1993.
MLA-viite (9. p.)Hardwick, E. Russell. Introduction to Chemistry. Extended edition. Harcourt Brace Jovanovich, 1993.
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