Baron, R. M., Bem, D. J. 1., Brehm, J. W., Brock, T. C., Greenwald, A. G., & Ostrom, T. M. (1968). Psychological foundation of attitudes. New York: Academic Press.

Baron, Reuben M., Daryl J. 1938- Bem, Jack Williams Brehm, Timothy C. Brock, Anthony G. Greenwald, and Thomas M. Ostrom. Psychological Foundation of Attitudes. New York: Academic Press, 1968.

Baron, Reuben M., et al. Psychological Foundation of Attitudes. New York: Academic Press, 1968.