Tillett, A. (1970). Management thinkers. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Tillett, A. Management Thinkers. England: Penguin Books, 1970.
Lua MLA (9ú heag.)Tillett, A. Management Thinkers. Penguin Books, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.