Wordly Wise 3000 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Wordly Wise 3000" in English language version.

refsWebsite

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archive.org

Duffy, Cathy (2005). 100 Top Picks for Homeschool Curriculum: Choosing the Right Educational Philosophy for Your Child's Learning Style. B&H Publishing Group. p. 199. ISBN 978-0-8054-3138-4.

cnbc.com

Lora Kolodny (August 23, 2017). "Popular study app Quizlet faces a moment of truth as a new school year begins". CNBC. Retrieved May 2, 2018.