RIES AL. (1986). POSITIONING: A BATTLE FOR YOUR MIND. WARNER BOOK.
Lua i Stíl Chicago (17ú heag.)RIES AL. POSITIONING: A BATTLE FOR YOUR MIND. NEW YORK: WARNER BOOK, 1986.
Lua MLA (9ú heag.)RIES AL. POSITIONING: A BATTLE FOR YOUR MIND. WARNER BOOK, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.