Cita APA (7a ed.)

KENNEDY, L. M., & TIPPS, S. (2003). Guiding children's learning of mathematics.-- ed.9. Wadsworth.

Cita Chicago Style (17a ed.)

KENNEDY, Leornard M., y Steve TIPPS. Guiding Children's Learning of Mathematics.-- Ed.9. Australia: Wadsworth, 2003.

Cita MLA (9a ed.)

KENNEDY, Leornard M., y Steve TIPPS. Guiding Children's Learning of Mathematics.-- Ed.9. Wadsworth, 2003.