Benner, D. G., & Hill, P. C. (1999). Baker encyclopedia of psychology & counseling (2nd ed.). Baker Books.

Benner, David G., and Peter C. Hill. Baker Encyclopedia of Psychology & Counseling. 2nd ed. Grand Rapids, Mich.: Baker Books, 1999.

Benner, David G., and Peter C. Hill. Baker Encyclopedia of Psychology & Counseling. 2nd ed. Baker Books, 1999.