APA (7th ed.) Citation

Baur, G. R., & George, L. O. (1976). Helping children learn mathematics: A competency-based laboratory approach. Cummings Pub. Co..

Chicago Style (17th ed.) Citation

Baur, Gregory R., and Linda Olsen George. Helping Children Learn Mathematics: A Competency-based Laboratory Approach. Menlo Park, Calif.: Cummings Pub. Co., 1976.

MLA (9th ed.) Citation

Baur, Gregory R., and Linda Olsen George. Helping Children Learn Mathematics: A Competency-based Laboratory Approach. Cummings Pub. Co., 1976.