Cooper, R. K. (1996). Executive EQ. Grossetiputman.
Lua i Stíl Chicago (17ú heag.)Cooper, Robert K. Executive EQ. New York: Grossetiputman, 1996.
Lua MLA (9ú heag.)Cooper, Robert K. Executive EQ. Grossetiputman, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.