Clayton, M. Brilliant Influence: What the Most Influential People Know, Do and Say (1.). Pearson Education UK.
Chicago-viite (17. p.)Clayton, Mike. Brilliant Influence: What the Most Influential People Know, Do and Say. 1. Pearson Education UK.
MLA-viite (8. p.)Clayton, Mike. Brilliant Influence: What the Most Influential People Know, Do and Say. 1. Pearson Education UK.
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