Collins, A., & Dacey, L. S. (2010). Zeroing in on number and operations: Key ideas and common misconceptions, grades 5-6. Stenhouse Publishers.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিCollins, Anne, এবং Linda Schulman Dacey. Zeroing in on Number and Operations: Key Ideas and Common Misconceptions, Grades 5-6. Portland, Me.: Stenhouse Publishers, 2010.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিCollins, Anne, এবং Linda Schulman Dacey. Zeroing in on Number and Operations: Key Ideas and Common Misconceptions, Grades 5-6. Stenhouse Publishers, 2010.