For interviews and press issues in North America, please contact Harper Collins.

For interviews and press issues in the UK, India, Asia and Australia, please contact Hodder & Stoughton.

For interviews and press issues in Germany and the rest of the world, please contact Mr. Dobelli’s assistant, Konstanze Klein.

For book corrections, wrong or missing citations or attributions, errata and other factual errors, please view the Book Corrections Page.

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