
Sigmund Freud is considered an expert on psychoanalysis. He wrote numerous books and papers and is his works are cited by other experts in the field of psychology.
Dr. Phill (McGraw) is considered an expert in "life strategies." He is the author of four New York times best sellers and his books have been published in 34 languages with over 18 million copies in print. He has published numerous scholarly articles and has practiced in many of fields of clinical psychology and behavioral medicine. He is considered an expert in his field.
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