Drexler, K. (2010). Business Icons Who Changed the World. Jaico Publishing House.
Lua i Stíl Chicago (17ú heag.)Drexler, Kateri. Business Icons Who Changed the World. Mumbai: Jaico Publishing House, 2010.
Lua MLA (9ú heag.)Drexler, Kateri. Business Icons Who Changed the World. Jaico Publishing House, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.