Watkins, R. P. (1980). Computer problem solving. Robert E. Krieger.
Chicago-čujuhus (17. p.)Watkins, R. P. Computer Problem Solving. Malabar: Robert E. Krieger, 1980.
MLA-čujuhus (9. p.)Watkins, R. P. Computer Problem Solving. Robert E. Krieger, 1980.
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