Berger, Jonah Contagious : why things catch on / Jonah Berger - India Simon and Schuster 2013 - 244 p. ISBN: 9781471111693 Subjects--Topical Terms: Viral marketingWord-of-mouth advertising.ᅠNew products.ᅠConsumer behavior.ᅠ Dewey Class. No.: 658.8342 BER-J