Zastrow, C. (1993). Social work with groups: Using the class as a group leadership laboratory (3rd ed.). Nelson-Hall.
Lua i Stíl Chicago (17ú heag.)Zastrow, Charles. Social Work with Groups: Using the Class as a Group Leadership Laboratory. 3rd ed. Chicago: Nelson-Hall, 1993.
Lua MLA (9ú heag.)Zastrow, Charles. Social Work with Groups: Using the Class as a Group Leadership Laboratory. 3rd ed. Nelson-Hall, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.