Heinich, R. (1996). Instructional media and technologies for learning (5th edition.). Prentice Hall.
Chicago-referens (17:e uppl.)Heinich, Robert. Instructional Media and Technologies for Learning. 5th edition. Englewood Cliffs, NJ: Prentice Hall, 1996.
MLA-referens (9:e uppl.)Heinich, Robert. Instructional Media and Technologies for Learning. 5th edition. Prentice Hall, 1996.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.