Folds, V., & Victoria Folds. (2008). Three-step tray tasking: Logic & critical thinking activities for young children. Clifton Park, NY: Thomson Delmar Learning.
Chicago-tyylinen lähdeviittausFolds, Victoria, ja Victoria Folds. Three-step Tray Tasking: Logic & Critical Thinking Activities for Young Children. Clifton Park, NY: Thomson Delmar Learning, 2008.
MLA-viiteFolds, Victoria, ja Victoria Folds. Three-step Tray Tasking: Logic & Critical Thinking Activities for Young Children. Clifton Park, NY: Thomson Delmar Learning, 2008.
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