Top 99 keynote speakers every event planner must know about
Hubilo Blog
FEBRUARY 25, 2020
Jonah Berger is a marketing professor at the Wharton School at the University of Pennsylvania and internationally bestselling author of Contagious , Invisible Influence , and The Catalyst. Where to Find him? You can book an appointment with Douglas, here. Jonah Berger Who is he? What is he known for? Where to find him?
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