Hutchinson, S. E., & Sawyer, S. C. (1980). Laboratory manual for use with computers the user perspective (2nd ed.). Homewood.
Lua i Stíl Chicago (17ú heag.)Hutchinson, Sarah E., agus Stacey C. Sawyer. Laboratory Manual for Use with Computers the User Perspective. 2nd ed. Boston: Homewood, 1980.
Lua MLA (9ú heag.)Hutchinson, Sarah E., agus Stacey C. Sawyer. Laboratory Manual for Use with Computers the User Perspective. 2nd ed. Homewood, 1980.
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