Clawson, J. G. (2009). Level three leadership: Getting below the surface (4th ed.). Pearson/Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Clawson, James G. Level Three Leadership: Getting Below the Surface. 4th ed. Upper Saddle River, N.J: Pearson/Prentice Hall, 2009.
Lua MLA (9ú heag.)Clawson, James G. Level Three Leadership: Getting Below the Surface. 4th ed. Pearson/Prentice Hall, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.