ebrary, Inc, Cline, K., & Zullo, H. (2011). Teaching mathematics with classroom voting: With and without clickers. Mathematical Association of America.
Chicago-viite (17. p.)ebrary, Inc, Kelly Cline, ja Holly Zullo. Teaching Mathematics with Classroom Voting: With and Without Clickers. Washington, D.C.: Mathematical Association of America, 2011.
MLA-viite (9. p.)ebrary, Inc, et al. Teaching Mathematics with Classroom Voting: With and Without Clickers. Mathematical Association of America, 2011.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.