Moral justification is a powerful disengagement mechanism. Destructive conduct is made personally and socially acceptable by portraying it in the service of moral ends. This is why most appeals against violent means usually fall on deaf ears.

Ronald Press: New York. Major books

The following books have more than 5000 citations in Google Scholar:
Bandura A. J.

He was one of the youngest president-elects in the history of the APA at the age of 46. Bandura served as a member of the APA Board of Scientific Affairs from 1968 to 1970 and is well known as a member of the editiorial board of nine psychology journals including the Journal of Personality and Social Psychology from 1963 to 1972. Skinner Sigmund Freud and Jean Piaget and as the most cited living one.