หนังสือจาก Stephen Mertens

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  The Invisible Authority: How to Influence People with Mind Control, Persuasion, NLP, Manipulation Techniquest and Dark PsychologyStephen Mertens
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  The Puppet: Master Dark psychology guide to Learn everything About Manipulation techniques, Body Language, NLP, Mind Control, How to Analyze People, Art of Persuasion and Emotional Influence: Master Dark psychology guide to Learn everything About Manipulation techniques, Body Language, NLP, Mind Control, How to Analyze People, Art of Persuasion and Emotional InfluenceStephen Mertens