Clements, P. (1996). Be positive: A guide for managers. Kogan Page India.
Chicago Style aipamenaClements, Phil. Be Positive: A Guide for Managers. NewDelhi: Kogan Page India, 1996.
MLA aipamenaClements, Phil. Be Positive: A Guide for Managers. Kogan Page India, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.