Hill, J. W., & Kolb, D. K. (2001). Chemistry for changing times (9th ed.). Pearson/Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Hill, John William, agus Doris K. Kolb. Chemistry for Changing Times. 9th ed. Upper Saddle River, N.J: Pearson/Prentice Hall, 2001.
Lua MLA (9ú heag.)Hill, John William, agus Doris K. Kolb. Chemistry for Changing Times. 9th ed. Pearson/Prentice Hall, 2001.
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