APA (7th ed.) Citation

Krasa, N., & Shunkwiler, S. (2009). Number sense and number nonsense: Understanding the challenges of learning math. Paul H. Brookes Pub. Co..

Chicago Style (17th ed.) Citation

Krasa, Nancy, and Sara Shunkwiler. Number Sense and Number Nonsense: Understanding the Challenges of Learning Math. Baltimore: Paul H. Brookes Pub. Co., 2009.

MLA (9th ed.) Citation

Krasa, Nancy, and Sara Shunkwiler. Number Sense and Number Nonsense: Understanding the Challenges of Learning Math. Paul H. Brookes Pub. Co., 2009.