Lua APA (7ú heag.)
Seels, B., & Glasgow, Z. (1990). Exercises in Instructional Design. Merrill.
Lua i Stíl Chicago (17ú heag.)
Seels, Barbara, agus Zita Glasgow. Exercises in Instructional Design. London: Merrill, 1990.
Lua MLA (9ú heag.)
Seels, Barbara, agus Zita Glasgow. Exercises in Instructional Design. Merrill, 1990.
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