WHETTEN, D. A. (1991). Developing Management Skill. Harper Collins Publisher.
Lua i Stíl Chicago (17ú heag.)WHETTEN, David A. Developing Management Skill. Harper Collins Publisher, 1991.
Lua MLA (8ú heag.)WHETTEN, David A. Developing Management Skill. Harper Collins Publisher, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.