Clegg, B. (2004). Crash course in personal development. Kogan Page ; Sterling, VA : Stylus Pub..
Lua i Stíl Chicago (17ú heag.)Clegg, Brian. Crash Course in Personal Development. London: Kogan Page ; Sterling, VA : Stylus Pub., 2004.
Lua MLA (8ú heag.)Clegg, Brian. Crash Course in Personal Development. Kogan Page ; Sterling, VA : Stylus Pub., 2004.
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