Davidson, N. (1990). Cooperative learning in mathematics: A handbook for teachers. Addison-Wesley Pub. Co..
Dyfyniad Arddull ChicagoDavidson, Neil. Cooperative Learning in Mathematics: A Handbook for Teachers. Menlo Park, Calif.: Addison-Wesley Pub. Co., 1990.
Dyfyniad MLADavidson, Neil. Cooperative Learning in Mathematics: A Handbook for Teachers. Addison-Wesley Pub. Co., 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.