Cita APA (7a ed.)

Kramer, K. (1975). Teaching elementary school mathematics (3d ed.). Allyn and Bacon.

Cita Chicago Style (17a ed.)

Kramer, Klaas. Teaching Elementary School Mathematics. 3d ed. Boston: Allyn and Bacon, 1975.

Cita MLA (9a ed.)

Kramer, Klaas. Teaching Elementary School Mathematics. 3d ed. Allyn and Bacon, 1975.