Digital Equipment Corporation. (1980). Introduction to computer-based education (2nd ed.). Digital Equipment Corporation.
Chicago-referens (17:e uppl.)Digital Equipment Corporation. Introduction to Computer-based Education. 2nd ed. [Maynard, Mass.]: Digital Equipment Corporation, 1980.
MLA-referens (8:e uppl.)Digital Equipment Corporation. Introduction to Computer-based Education. 2nd ed. Digital Equipment Corporation, 1980.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.