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 Hi!

Please, what is the title and author of book on the "reciprocity" principle?

Thank you so much.

Gas.

gdc2579's picture

Gasmel, I'm not sure if this is the original author on the topic, but there is a book titled Influence that discusses Reciprocity and five other principles of influence. The author to that book is Robert Cialdini, a Professor of Psychology at Arizona State University. Hope this helps, Gary

gasmel's picture

 Thanks Gary.

gas