APA (7th ed.) Citation
Frey, N., Fisher, D., & Everlove, S. (2009). Productive group work: How to engage students, build teamwork, and promote understanding. ASCD.
Chicago Style (17th ed.) Citation
Frey, Nancy, Douglas Fisher, and Sandi Everlove. Productive Group Work: How to Engage Students, Build Teamwork, and Promote Understanding. Alexandria, Va.: ASCD, 2009.
MLA (9th ed.) Citation
Frey, Nancy, et al. Productive Group Work: How to Engage Students, Build Teamwork, and Promote Understanding. ASCD, 2009.
Warning: These citations may not always be 100% accurate.