APA (7th ed.) Citation

Smith, P. L., & Ragan, T. J. (1993). Instructional design. Merrill u.a.

Chicago Style (17th ed.) Citation

Smith, Patricia L., and Tillman J. Ragan. Instructional Design. New York: Merrill u.a, 1993.

MLA (9th ed.) Citation

Smith, Patricia L., and Tillman J. Ragan. Instructional Design. Merrill u.a, 1993.