Metcalfe, H. C., Williams, J. E., & Castka, J. F. (1974). Teacher's guide to Modern chemistry. Holt, Rinehart, and Winston.
Lua i Stíl Chicago (17ú heag.)Metcalfe, H. Clark, John E. Williams, agus Joseph F. Castka. Teacher's Guide to Modern Chemistry. New York: Holt, Rinehart, and Winston, 1974.
Lua MLA (8ú heag.)Metcalfe, H. Clark, et al. Teacher's Guide to Modern Chemistry. Holt, Rinehart, and Winston, 1974.
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