Duggan, E. W. (2006). Measuring information systems delivery quality. Hershey, PA: Idea Group Pub.
استشهاد بنمط شيكاغوDuggan, Evan W. Measuring Information Systems Delivery Quality. Hershey, PA: Idea Group Pub, 2006.
MLA استشهادDuggan, Evan W. Measuring Information Systems Delivery Quality. Hershey, PA: Idea Group Pub, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.