APA (7th ed.) Citation

De Schill, S. (1974). The challenge for group psychotherapy: Present and future. International Universities Press.

Chicago Style (17th ed.) Citation

De Schill, Stefan. The Challenge for Group Psychotherapy: Present and Future. New York: International Universities Press, 1974.

MLA (8th ed.) Citation

De Schill, Stefan. The Challenge for Group Psychotherapy: Present and Future. International Universities Press, 1974.