APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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