O' Brien, P. (1993). Taking the macho out of management. Sheldon Press.
Lua i Stíl Chicago (17ú heag.)O' Brien, Paddy. Taking the Macho Out of Management. Marylebone Road, London: Sheldon Press, 1993.
Lua MLA (9ú heag.)O' Brien, Paddy. Taking the Macho Out of Management. Sheldon Press, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.