APA (7th ed.) Citation

Ledford, B. R., & Sleeman, P. J. (2002). Instructional design: System strategies. Information Age Pub..

Chicago Style (17th ed.) Citation

Ledford, Bruce R., and Phillip J. Sleeman. Instructional Design: System Strategies. Greenwich, Conn.: Information Age Pub., 2002.

MLA (9th ed.) Citation

Ledford, Bruce R., and Phillip J. Sleeman. Instructional Design: System Strategies. Information Age Pub., 2002.