BOWER JOSEPH L. (1983). TWO FACES OF MANAGEMENT. MENTOR BOOKS.
Lua i Stíl Chicago (17ú heag.)BOWER JOSEPH L. TWO FACES OF MANAGEMENT. NEW YORK: MENTOR BOOKS, 1983.
Lua MLA (9ú heag.)BOWER JOSEPH L. TWO FACES OF MANAGEMENT. MENTOR BOOKS, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.