Bethel, L. (1962). Industrial Organization and Managenent (4.). McGraw Hill.
Lua i Stíl Chicago (17ú heag.)Bethel, Lawrence. Industrial Organization and Managenent. 4. NewYork: McGraw Hill, 1962.
Lua MLA (9ú heag.)Bethel, Lawrence. Industrial Organization and Managenent. 4. McGraw Hill, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.