7James Finn. A Walk on the Altered Side[A].D. Ely, T. Plomp, ed. Classic Writings on Instructional Technology[C]. Englewood, Colorado: Libraries, 1962. 47-55.
8Donald Ely. Projections, Probes, and Problems of Instructional Technology in the Future[A]. Cochran, Lee W, ed. Okoboji: A Twenty Year Review of Leadership 1955-1974[C]. Greenwich, CT: Information Age Publishing, Inc, 1973. 180-185.
9Donald Ely. Technology is the Answer: But What was the Question? [R].The James P. Curtis Distinguished Lecture Series, Capstone College of Education Society, University of Alabama, 1995-4-14.
10Donald Ely. The Field of Educational Technology: A Statement of Definition[J]. Audiovisual Instruction, 1972,7(8) :36-43.
