Gaya APA

Sobel, M, A., M., M. (1991). Teaching mathematics: Activities and strategies (Ed.2). Boston: Allyn and Bacon.

Gaya MLA

Sobel, Max, A.., M., Maletsky,Evan. "Teaching mathematics: Activities and strategies". Ed.2 Boston: Allyn and Bacon, 1991. Buku Tercetak.