ROBBINS, S. P. (2005). Management ed.7 Stephen P. Robbins, Mary Coulter. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)ROBBINS, Stephen P. Management Ed.7 Stephen P. Robbins, Mary Coulter. Prentice Hall, 2005.
Lua MLA (8ú heag.)ROBBINS, Stephen P. Management Ed.7 Stephen P. Robbins, Mary Coulter. Prentice Hall, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.