APA (7th ed.) Citation

Bley, N. S., & Thornton, C. A. (1981). Teaching mathematics to the learning disabled. Aspen Systems Corp..

Chicago Style (17th ed.) Citation

Bley, Nancy S., and Carol A. Thornton. Teaching Mathematics to the Learning Disabled. Rockville, Md.: Aspen Systems Corp., 1981.

MLA (8th ed.) Citation

Bley, Nancy S., and Carol A. Thornton. Teaching Mathematics to the Learning Disabled. Aspen Systems Corp., 1981.