Gaither, N., & Frazier, G. (2002). Operations management (9th ed.). South-Western/Thomson Learning.
Lua i Stíl Chicago (17ú heag.)Gaither, Norman, agus Greg Frazier. Operations Management. 9th ed. Australia ; Cincinnati, Ohio: South-Western/Thomson Learning, 2002.
Lua MLA (8ú heag.)Gaither, Norman, agus Greg Frazier. Operations Management. 9th ed. South-Western/Thomson Learning, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.