Butler-Bowdon, T. (2004). 50 success classics: Winning wisdom for work and life from 50 landmark books. Nicholas Brealey Pub..
Lua i Stíl Chicago (17ú heag.)Butler-Bowdon, Tom. 50 Success Classics: Winning Wisdom for Work and Life from 50 Landmark Books. London ; Yarmouth, Me.: Nicholas Brealey Pub., 2004.
Lua MLA (8ú heag.)Butler-Bowdon, Tom. 50 Success Classics: Winning Wisdom for Work and Life from 50 Landmark Books. Nicholas Brealey Pub., 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.