APA-Zitierstil (7. Ausg.)

Zimpfer, D. G. (1984). Group work in the helping professions: A bibliography (2. ed.). Accelerated Development.

Chicago-Zitierstil (17. Ausg.)

Zimpfer, David G. Group Work in the Helping Professions: A Bibliography. 2. ed. Muncie, Ind: Accelerated Development, 1984.

MLA-Zitierstil (9. Ausg.)

Zimpfer, David G. Group Work in the Helping Professions: A Bibliography. 2. ed. Accelerated Development, 1984.