Harrison, N. (1999). How to design self-directed and distance learning: A guide for creators of web-based training, computer-based training, and self-study materials. McGraw-Hill.
Παραπομπή σε μορφή Chicago (17η εκδ.)Harrison, Nigel. How to Design Self-directed and Distance Learning: A Guide for Creators of Web-based Training, Computer-based Training, and Self-study Materials. New York: McGraw-Hill, 1999.
Παραπομπή σε μορφή MLA (9th εκδ.)Harrison, Nigel. How to Design Self-directed and Distance Learning: A Guide for Creators of Web-based Training, Computer-based Training, and Self-study Materials. McGraw-Hill, 1999.
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