APA-Zitierstil (7. Ausg.)

Haag, S., & Cummings, M. (2008). Information systems essentials (2nd ed.). McGraw-Hill/Irwin.

Chicago-Zitierstil (17. Ausg.)

Haag, Stephen, und Maeve Cummings. Information Systems Essentials. 2nd ed. New York, N.Y: McGraw-Hill/Irwin, 2008.

MLA-Zitierstil (9. Ausg.)

Haag, Stephen, und Maeve Cummings. Information Systems Essentials. 2nd ed. McGraw-Hill/Irwin, 2008.