Παραπομπή σε μορφή APA (7η εκδ.)

Zells, L. (1990). Managing software projects: Selecting and using pc-based project management systems. QED Information Sciences, Inc.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Zells, Lois. Managing Software Projects: Selecting and Using Pc-based Project Management Systems. Wellesley, MA: QED Information Sciences, Inc, 1990.

Παραπομπή σε μορφή MLA (8th εκδ.)

Zells, Lois. Managing Software Projects: Selecting and Using Pc-based Project Management Systems. QED Information Sciences, Inc, 1990.