Kennedy, L. M., Tipps, S., & Johnson, A. (2004). Guiding children's learning of mathematics (10th ed.). Thomson/Wadsworth.
Lua i Stíl Chicago (17ú heag.)Kennedy, Leonard M., Steve Tipps, agus Art Johnson. Guiding Children's Learning of Mathematics. 10th ed. Australia: Thomson/Wadsworth, 2004.
Lua MLA (9ú heag.)Kennedy, Leonard M., et al. Guiding Children's Learning of Mathematics. 10th ed. Thomson/Wadsworth, 2004.
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