Cita APA (7th ed.)

Collins, A., & Dacey, L. S. (2010). Zeroing in on number and operations: Key ideas and common misconceptions, grades 5-6. Stenhouse Publishers.

Cita Chicago (17th ed.)

Collins, Anne, i Linda Schulman Dacey. Zeroing in on Number and Operations: Key Ideas and Common Misconceptions, Grades 5-6. Portland, Me.: Stenhouse Publishers, 2010.

Cita MLA (9th ed.)

Collins, Anne, i Linda Schulman Dacey. Zeroing in on Number and Operations: Key Ideas and Common Misconceptions, Grades 5-6. Stenhouse Publishers, 2010.