APA

Strang R. M., . (1958). Group work in education. New York: Harper.

Chicago

Strang Ruth May, . 1958. Group work in education. New York: Harper.

Harvard

Strang R. M., . (1958). Group work in education. New York: Harper.

MLA

Strang Ruth May, . Group work in education. New York: Harper. 1958.