In his speech on depression, dhavan said: "according to materials i located through a google search, almost 20 million american adults suffer from a depressive illness serious enough to interfere with their jobs and their family life." according to your textbook, did dhavan make any mistakes in citing his sources? in his speech on depression, dhavan said: "according to materials i located through a google search, almost 20 million american adults suffer from a depressive illness serious enough to interfere with their jobs and their family life." according to your textbook, did dhavan make any mistakes in citing his sources?