ROBICHAUD, B., & MUSCAT, E. (1977). Introduction to data processing.-- ed.2. McGraw-Hill.

ROBICHAUD, Beryl, and Eugene MUSCAT. Introduction to Data Processing.-- Ed.2. New York: McGraw-Hill, 1977.

ROBICHAUD, Beryl, and Eugene MUSCAT. Introduction to Data Processing.-- Ed.2. McGraw-Hill, 1977.