TEACHING AND MEDIA, A SYSTEMATIC APPROACHGERLACH V; ELY D. P.1971Book

The Diffusion of Educational Technology in Indonesia. A Multi-Faceted ApproachELY, D. P.British journal of educational technology. 1989, Vol 20, Num 3, pp 183-190, issn 0007-1013Article

ICEM-Sponsored Conference on Microteaching at Reading, England, September, 1975TROTT A; ELY D. P; GRIFFITHS R et al.Educational Media International. 1976, Num 1, pp 1-31Article

The Promises of Educational Technology : A Reassessment in Educational Technology and Mass MediaELY, D. P; PLOMP, T.International review of education. 1986, Vol 32, Num 3, pp 231-249, issn 0020-8566Article