Robbins, S. P. (2000). Managing today! (2nd ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Robbins, Stephen P. Managing Today! 2nd ed. Upper Saddle River, NJ: Prentice Hall, 2000.
Lua MLA (8ú heag.)Robbins, Stephen P. Managing Today! 2nd ed. Prentice Hall, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.