Maher, B. (2001). Filling the glass: The skeptic's guide to positive thinking in business. Dearborn Trade.
Chicago-čujuhus (17. p.)Maher, Barry. Filling the Glass: The Skeptic's Guide to Positive Thinking in Business. Chicago, IL: Dearborn Trade, 2001.
MLA-čujuhus (9. p.)Maher, Barry. Filling the Glass: The Skeptic's Guide to Positive Thinking in Business. Dearborn Trade, 2001.
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