Clements, P. (1996). Be positive: A guide for managers. Kogan Page India.
Lua i Stíl Chicago (17ú heag.)Clements, Phil. Be Positive: A Guide for Managers. NewDelhi: Kogan Page India, 1996.
Lua MLA (9ú heag.)Clements, Phil. Be Positive: A Guide for Managers. Kogan Page India, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.