Slater, R. (2003). 29 leadership secrets from Jack Welch (2nd ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Slater, Robert. 29 Leadership Secrets from Jack Welch. 2nd ed. New York: McGraw-Hill, 2003.
Lua MLA (8ú heag.)Slater, Robert. 29 Leadership Secrets from Jack Welch. 2nd ed. McGraw-Hill, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.