Johnston, R., & Shulver, M. C. (2018). Service Operations Management: Improving Service Delivery (4th ed.). Pearson.
Lua i Stíl Chicago (17ú heag.)Johnston, Robert, agus Michael Clark Shulver. Service Operations Management: Improving Service Delivery. 4th ed. India: Pearson, 2018.
Lua MLA (9ú heag.)Johnston, Robert, agus Michael Clark Shulver. Service Operations Management: Improving Service Delivery. 4th ed. Pearson, 2018.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.