Citazione Stile APA (7a Edizione)

Sobel, M., & Maletsky, E. M. (1991). Teaching mathematics: A sourcebook of aids, activities and strategies (2nd ed.). Allyn and Bacon.

Citazione stile Chigago Style (17a edizione)

Sobel, Max, e Evan M. Maletsky. Teaching Mathematics: A Sourcebook of Aids, Activities and Strategies. 2nd ed. Boston: Allyn and Bacon, 1991.

Citatione MLA (9a ed.)

Sobel, Max, e Evan M. Maletsky. Teaching Mathematics: A Sourcebook of Aids, Activities and Strategies. 2nd ed. Allyn and Bacon, 1991.