4James 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.
5Donald 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.
6Donald 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.
7Donald Ely. The Field of Educational Technology: A Statement of Definition[J]. Audiovisual Instruction, 1972,7(8) :36-43.
8Donald Ely. Toward a Philosophy of Instructional Technology: Thirty Years On[J]. British Journal of EducationalTechnology, 1999,30 (4) : 305-310.
9Donald Ely. Education and Information Technology: What are the Questions?[A].E. Flaxman, ed. Trends and Issues inEducation (VIII) [C]. 1986.1 - 13.
10Donald Ely and T. Plomp. The Promises of Educational Technology: a Reassessment[J]. International Review ofEducation, 1986,32: 231-250.
