Citazione Stile APA (7a Edizione)
Frey, N., Fisher, D., & Everlove, S. (2009). Productive group work: How to engage students, build teamwork, and promote understanding. ASCD.
Citazione stile Chigago Style (17a edizione)
Frey, Nancy, Douglas Fisher, e Sandi Everlove. Productive Group Work: How to Engage Students, Build Teamwork, and Promote Understanding. Alexandria, Va.: ASCD, 2009.
Citatione MLA (9a ed.)
Frey, Nancy, et al. Productive Group Work: How to Engage Students, Build Teamwork, and Promote Understanding. ASCD, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.