Szymanski, R. Introduction to Computers and Information Systems. Columbus: Merrill Publishing Company, 1988 577 p. : ill. 0-675-20768-1.
Szymanski, R. Introduction to Computers and Information Systems. Columbus: Merrill Publishing Company, 1988 577 p. : ill. 0-675-20768-1.
Szymanski, R. (1988) Introduction to Computers and Information Systems, Columbus: Merrill Publishing Company 577 p. : ill. 0-675-20768-1.
Szymanski, R. (1988). Introduction to Computers and Information Systems. Monogr.. Columbus: Merrill Publishing Company, 577 p. : ill.
Szymanski R. Introduction to Computers and Information Systems: Monogr.. Columbus: Merrill Publishing Company; 1988. p. 577 p. : ill. ISBN: 0-675-20768-1.
