APA (7e ed.) Bronvermelding

Haag, S., & Cummings, M. (2009). Information systems essentials (3rd ed. customized ed.). McGraw-Hill/Irwin.

Chicago (17e ed.) Bronvermelding

Haag, Stephen, en Maeve Cummings. Information Systems Essentials. 3rd ed. customized ed. Boston: McGraw-Hill/Irwin, 2009.

MLA (9e ed.) Bronvermelding

Haag, Stephen, en Maeve Cummings. Information Systems Essentials. 3rd ed. customized ed. McGraw-Hill/Irwin, 2009.