friedman, D., & Tro, N. J. (2003). Study guide for Introductory chemistry. Pearson Education Inc.
Lua i Stíl Chicago (17ú heag.)friedman, Donna, agus Nivaldo J. Tro. Study Guide for Introductory Chemistry. Upper Saddle River, NJ: Pearson Education Inc, 2003.
Lua MLA (9ú heag.)friedman, Donna, agus Nivaldo J. Tro. Study Guide for Introductory Chemistry. Pearson Education Inc, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.