PARKINSON C NORTHCOTE. (1989). 109 WAYS OF GETTING TO THE TOP: IDEAS OF THE WORLDS. VISION BOOKS PVT. LTD.
Lua i Stíl Chicago (17ú heag.)PARKINSON C NORTHCOTE. 109 WAYS OF GETTING TO THE TOP: IDEAS OF THE WORLDS. NEW DELHI BOMBAY: VISION BOOKS PVT. LTD, 1989.
Lua MLA (9ú heag.)PARKINSON C NORTHCOTE. 109 WAYS OF GETTING TO THE TOP: IDEAS OF THE WORLDS. VISION BOOKS PVT. LTD, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.