Clifford, S. H., Sawyer, S. C., & Stallings, W. D. (1990). Computers: The user perspective (2nd ed.). Irwin.
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Dyfyniad Arddull Chicago
Clifford, Sarah Hutchinson, Stacey C. Sawyer, and Warren D. Stallings. Computers: The User Perspective. 2nd ed. Homewood, IL: Irwin, 1990.
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Dyfyniad MLA
Clifford, Sarah Hutchinson, et al. Computers: The User Perspective. 2nd ed. Irwin, 1990.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.