Dyfyniad APA

O'Brien, J. A. (1997). Introduction to information systems (8thed.). McGraw-Hill.

Dyfyniad Arddull Chicago

O'Brien, James A. Introduction to Information Systems. 8thed. Boston, Mass.: McGraw-Hill, 1997.

Dyfyniad MLA

O'Brien, James A. Introduction to Information Systems. 8thed. McGraw-Hill, 1997.

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