Cooper, A. M. (1941). How to supervise people. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Cooper, Alfred M. How to Supervise People. New York: McGraw-Hill, 1941.
Lua MLA (8ú heag.)Cooper, Alfred M. How to Supervise People. McGraw-Hill, 1941.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.