HAMEL GARY. (1994). COMPETING FOR THE FUTUER. HARVARD BUSINESS REVIEW SCHOOL.
Lua i Stíl Chicago (17ú heag.)HAMEL GARY. COMPETING FOR THE FUTUER. BOSTON: HARVARD BUSINESS REVIEW SCHOOL, 1994.
Lua MLA (9ú heag.)HAMEL GARY. COMPETING FOR THE FUTUER. HARVARD BUSINESS REVIEW SCHOOL, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.