Heizer, J. (2009). Operations Management (12th.). Pearson.
Lua i Stíl Chicago (17ú heag.)Heizer, Jay. Operations Management. 12th. New Delhi: Pearson, 2009.
Lua MLA (9ú heag.)Heizer, Jay. Operations Management. 12th. Pearson, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.