(2010). Theory of constraints handbook. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Theory of Constraints Handbook. McGraw-Hill, 2010.
Lua MLA (8ú heag.)Theory of Constraints Handbook. McGraw-Hill, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.