Lewis, A. (2006). The seven minute difference: Small steps to big changes. Dearborn Trade Pub..
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Chicago-čujuhus (17. p.)
Lewis, Allyson. The Seven Minute Difference: Small Steps to Big Changes. Chicago, IL: Dearborn Trade Pub., 2006.
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MLA-čujuhus (9. p.)
Lewis, Allyson. The Seven Minute Difference: Small Steps to Big Changes. Dearborn Trade Pub., 2006.
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