O'Brien, J. A. (1989). Computer concepts and applications: With an introduction to software and BASIC (3rd ed.). Irwin.
Citazione stile Chigago Style (17a edizione)O'Brien, James A. Computer Concepts and Applications: With an Introduction to Software and BASIC. 3rd ed. Homewood, Ill: Irwin, 1989.
Citatione MLA (9a ed.)O'Brien, James A. Computer Concepts and Applications: With an Introduction to Software and BASIC. 3rd ed. Irwin, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.