Παραπομπή σε μορφή APA (7η εκδ.)

Schonberger, R., & Knod, E. M. (1991). Operations management: Improving customer service (4th international ed.). Irwin.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Schonberger, Richard, και Edward M. Knod. Operations Management: Improving Customer Service. 4th international ed. Homewood, IL: Irwin, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Schonberger, Richard, και Edward M. Knod. Operations Management: Improving Customer Service. 4th international ed. Irwin, 1991.