Hjelt, E., & Hjelt, O. E. A. (1890). Principles of general organic chemistry. Longmans, Green, and Co..
Lua i Stíl Chicago (17ú heag.)Hjelt, Edv., agus Otto E. A. Hjelt. Principles of General Organic Chemistry. London, New York: Longmans, Green, and Co., 1890.
Lua MLA (8ú heag.)Hjelt, Edv., agus Otto E. A. Hjelt. Principles of General Organic Chemistry. Longmans, Green, and Co., 1890.
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