APA-Zitierstil (7. Ausg.)

Frey, N. (2009). Productive group work: How to engage students, build teamwork, and promote understanding. ASCD.

Chicago-Zitierstil (17. Ausg.)

Frey, Nancy. Productive Group Work: How to Engage Students, Build Teamwork, and Promote Understanding. Alexandria, Va: ASCD, 2009.

MLA-Zitierstil (9. Ausg.)

Frey, Nancy. Productive Group Work: How to Engage Students, Build Teamwork, and Promote Understanding. ASCD, 2009.