APA

Burch J. G., Grudnitski G., . (1989). Information systems: theory and practice. New York: Wiley.

Chicago

Burch John G, Grudnitski Gary, . 1989. Information systems: theory and practice. New York: Wiley.

Harvard

Burch J. G., Grudnitski G., . (1989). Information systems: theory and practice. New York: Wiley.

MLA

Burch John G, Grudnitski Gary, . Information systems: theory and practice. New York: Wiley. 1989.