Lockard, J. (1992). Instructional software: Practical design and development. Wm. C. Brown Publishers.
Lua i Stíl Chicago (17ú heag.)Lockard, James. Instructional Software: Practical Design and Development. Dubuque, Iowa: Wm. C. Brown Publishers, 1992.
Lua MLA (8ú heag.)Lockard, James. Instructional Software: Practical Design and Development. Wm. C. Brown Publishers, 1992.
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