Association for Educational and Training Technology. Annual Conference, Percival, F., & Ellington, H. (1981). Distance learning and evaluation / edited for the Association for Educational and Training Technology by Fred Percival and Henry Ellington. Kogan Page ;.
Chicago Style (17th ed.) CitationAssociation for Educational and Training Technology. Annual Conference, Fred Percival, and Henry Ellington. Distance Learning and Evaluation / Edited for the Association for Educational and Training Technology by Fred Percival and Henry Ellington. London ; New York: Kogan Page ;, 1981.
MLA (9th ed.) CitationAssociation for Educational and Training Technology. Annual Conference, et al. Distance Learning and Evaluation / Edited for the Association for Educational and Training Technology by Fred Percival and Henry Ellington. Kogan Page ;, 1981.