Gaya APA

Sobel, M, A., Maletsky, E, M. (1988). Teaching Mathematics: a sourcebook of aids, activities, and strategies . New Jersey: Prentice Hall, Englewood Cliffs, New Jersey 07632.

Gaya MLA

Sobel, Max, A.., Maletsky, Evan, M.. "Teaching Mathematics: a sourcebook of aids, activities, and strategies". New Jersey: Prentice Hall, Englewood Cliffs, New Jersey 07632, 1988. Text.