WAITLEY DENIS. (1996). NEW DYNAMICS OF GOAL SETTING. WILLIAM MORROW & CO.
Lua i Stíl Chicago (17ú heag.)WAITLEY DENIS. NEW DYNAMICS OF GOAL SETTING. NEW YORK: WILLIAM MORROW & CO, 1996.
Lua MLA (9ú heag.)WAITLEY DENIS. NEW DYNAMICS OF GOAL SETTING. WILLIAM MORROW & CO, 1996.
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