Rothman , H. (2004). 50 Companies that changed the World. Jaico Publishing House.
Lua i Stíl Chicago (17ú heag.)Rothman , Haward. 50 Companies That Changed the World. New delhi: Jaico Publishing House, 2004.
Lua MLA (9ú heag.)Rothman , Haward. 50 Companies That Changed the World. Jaico Publishing House, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.