Collins, A., & Dacey, L. S. (2010). Zeroing in on number and operations: Key ideas and common misconceptions, grades 5-6. Stenhouse Publishers.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Collins, Anne, ба Linda Schulman Dacey. Zeroing in on Number and Operations: Key Ideas and Common Misconceptions, Grades 5-6. Portland, Me.: Stenhouse Publishers, 2010.
MLA -ийн эшлэл (9 дэх хэвлэлт)Collins, Anne, ба Linda Schulman Dacey. Zeroing in on Number and Operations: Key Ideas and Common Misconceptions, Grades 5-6. Stenhouse Publishers, 2010.