المؤلفون: St. Andre Kean, Elizabeth, Welsh, Catherine A.C.

المصدر: Educational Technology, 1980 Jul 01. 20(7), 41-45.

URL الوصول: https://www.jstor.org/stable/44423190

المؤلفون: Welsh, Catherine A.C., Gatz, Jim, Klein, Debbie, Morgenthaler, Julie, Schultz, Sherry, Guess, Mike, Lemke, June, Abramson, Suzi, Roper, Kelley

المصدر: The Clearing House: A Journal of Educational Strategies, Issues and Ideas ; volume 51, issue 9, page 421-425 ; ISSN 0009-8655 1939-912X

الاتاحة: https://doi.org/10.1080/00098655.1978.9957091
http://www.tandfonline.com/doi/pdf/10.1080/00098655.1978.9957091