O'Brien, J. A. (1989). Computer concepts and applications: With an introduction to software and BASIC (3rd ed.). Irwin.
Citace podle Chicago (17th ed.)O'Brien, James A. Computer Concepts and Applications: With an Introduction to Software and BASIC. 3rd ed. Homewood, Ill: Irwin, 1989.
Citace podle MLA (9th ed.)O'Brien, James A. Computer Concepts and Applications: With an Introduction to Software and BASIC. 3rd ed. Irwin, 1989.
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