Clegg, B. (2009). Crash course in personal development: Minimize stress; maximize time.
Chicago Style aipamenaClegg, Brain. Crash Course in Personal Development: Minimize Stress; Maximize Time. Kogan Page India Pvt., Ltd.: New Delhi, 2009.
MLA aipamenaClegg, Brain. Crash Course in Personal Development: Minimize Stress; Maximize Time. 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.