Cummings, P. (2017). It all matters: 125 strategies to achieve maximum confidence, clarity, certainty, and creativity (1st.). John Wiley & Sons, Inc..
Style de citation Chicago (17e éd.)Cummings, Paul. It All Matters: 125 Strategies to Achieve Maximum Confidence, Clarity, Certainty, and Creativity. 1st. Hoboken, New Jersey: John Wiley & Sons, Inc., 2017.
Style de citation MLA (8e éd.)Cummings, Paul. It All Matters: 125 Strategies to Achieve Maximum Confidence, Clarity, Certainty, and Creativity. 1st. John Wiley & Sons, Inc., 2017.
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