Παραπομπή APA

Johnston, R., & Clark, G. (2005). Service operations management: Improving service delivery (2nd edition.). Harlow, England: Pearson Education.

Παραπομπή Chicago Style

Johnston, Robert, and Graham Clark. Service Operations Management: Improving Service Delivery. 2nd edition. Harlow, England: Pearson Education, 2005.

Παραπομπή MLA

Johnston, Robert, and Graham Clark. Service Operations Management: Improving Service Delivery. 2nd edition. Harlow, England: Pearson Education, 2005.

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