Instructional design competencies [microform] : the standards / Rita C. Richey, Dennis C. Fields, Marguerite Foxon with Robert C. Roberts, Timothy Spannaus, and J. Michael Spector 3rd ed
Instructional design competencies [microform] : the standards / Rita C. Richey, Dennis C. Fields, Marguerite Foxon with Robert C. Roberts, Timothy Spannaus, and J. Michael Spector