Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.