Citazione Stile APA (7a Edizione)

Wilson, G., & Ryland, G. (1949). Social group work practice: The creative use of the social process. Houghton.

Citazione stile Chigago Style (17a edizione)

Wilson, Gertrude, e Gladys Ryland. Social Group Work Practice: The Creative Use of the Social Process. Boston: Houghton, 1949.

Citatione MLA (9a ed.)

Wilson, Gertrude, e Gladys Ryland. Social Group Work Practice: The Creative Use of the Social Process. Houghton, 1949.