HALL DAVID. (1999). IN THE COMPANY OF HEROES: AN INSIDERS GUIDE TO ENTREPRENEURS AT WORK. KOGAN PAGE.
Lua i Stíl Chicago (17ú heag.)HALL DAVID. IN THE COMPANY OF HEROES: AN INSIDERS GUIDE TO ENTREPRENEURS AT WORK. LONDON: KOGAN PAGE, 1999.
Lua MLA (9ú heag.)HALL DAVID. IN THE COMPANY OF HEROES: AN INSIDERS GUIDE TO ENTREPRENEURS AT WORK. KOGAN PAGE, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.