Friend, C. E., Knight, L. D., & Glazier, T. F. (2015). The least you should know about vocabulary building: Word roots (Eighth edition.). Cengage Learning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFriend, Carol E., Laura D. Knight, और Teresa Ferster Glazier. The Least You Should Know About Vocabulary Building: Word Roots. Eighth edition. Boston, MA: Cengage Learning, 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFriend, Carol E., et al. The Least You Should Know About Vocabulary Building: Word Roots. Eighth edition. Cengage Learning, 2015.
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