Szymanski, R. A. (1990). Computers and Information Systems in Buisness. Merrill.
Chicago Style aipamenaSzymanski, Robert A. Computers and Information Systems in Buisness. Columbus: Merrill, 1990.
MLA aipamenaSzymanski, Robert A. Computers and Information Systems in Buisness. Merrill, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.