Gaya APA

Brueckner, L, J., Grossnickle, F, E. (1959). Discovering meanings in arithmetic . New York: Holt, Rinehart and Winston.

Gaya MLA

Brueckner, Leo, J.., Grossnickle, Foster, E. "Discovering meanings in arithmetic". New York: Holt, Rinehart and Winston, 1959. Text.