APA

Slavson S. R., . (1943). An introduction to group therapy. New York: International Universities Press.

Chicago

Slavson S R, . 1943. An introduction to group therapy. New York: International Universities Press.

Harvard

Slavson S. R., . (1943). An introduction to group therapy. New York: International Universities Press.

MLA

Slavson S R, . An introduction to group therapy. New York: International Universities Press. 1943.