Gonncalves, O. F., Griffin, B. L., & Sexton, T. L. (1997). Constructivist thinking in counseling practice, research, and training. Teachers College Press.

Gonncalves, Oscar F., Barbara L. Griffin, and Thomas L. Sexton. Constructivist Thinking in Counseling Practice, Research, and Training. New York, New York: Teachers College Press, 1997.

Gonncalves, Oscar F., et al. Constructivist Thinking in Counseling Practice, Research, and Training. Teachers College Press, 1997.