Hart, K. M., & Johnson, D. C. (1984). Ratio, children's strategies and errors: A report of the Strategies and Errors in Secondary Mathematics Project. NFER-Nelson.
Chicago Style (17th ed.) CitationHart, Kathleen M., and David C. Johnson. Ratio, Children's Strategies and Errors: A Report of the Strategies and Errors in Secondary Mathematics Project. Windsor, Berkshire: NFER-Nelson, 1984.
MLA (9th ed.) CitationHart, Kathleen M., and David C. Johnson. Ratio, Children's Strategies and Errors: A Report of the Strategies and Errors in Secondary Mathematics Project. NFER-Nelson, 1984.
Warning: These citations may not always be 100% accurate.