G. R. Tamarin: The Influence of Ethnic and Religious Prejudice on Moral Judgment. New Outlook, 1966, nro 9:1, s. 49–58. G. R. Tamarin: The Israeli Dilemma: Essays on a Warfare State. Rotterdam: Rotterdam University Press, 1973. ISBN 951-662-334-4. Selostusta tutkimuksesta on artikkelissa John Hartung: Love Thy Neighbor: The Evolution of In-Group Morality. Skeptic, 1995, nro Vol. 3, No. 4, 1995.