APA (7th ed.) Citation

Silbert, J., Carnine, D., & Stein, M. (1990). Direct instruction mathematics (2nd edition.). Merrill Pub.

Chicago Style (17th ed.) Citation

Silbert, Jerry, Douglas Carnine, and Marcy Stein. Direct Instruction Mathematics. 2nd edition. Columbus, Ohio: Merrill Pub, 1990.

MLA (9th ed.) Citation

Silbert, Jerry, et al. Direct Instruction Mathematics. 2nd edition. Merrill Pub, 1990.