APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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