friedman, D., & Tro, N. J. (2003). Study guide for Introductory chemistry. Pearson Education Inc.
芝加哥风格引文friedman, Donna, 与 Nivaldo J. Tro. Study Guide for Introductory Chemistry. Upper Saddle River, NJ: Pearson Education Inc, 2003.
MLA引文friedman, Donna, 与 Nivaldo J. Tro. Study Guide for Introductory Chemistry. Pearson Education Inc, 2003.
警告：这些引文格式不一定是100％准确.