Cita APA (7th ed.)

National Research Council (U.S.). Mathematics Learning Study Committee, Kilpatrick, J., & Swafford, J. (2002). Helping children learn mathematics. National Academy Press.

Cita Chicago (17th ed.)

National Research Council (U.S.). Mathematics Learning Study Committee, Jeremy Kilpatrick, i Jane Swafford. Helping Children Learn Mathematics. Washington, DC: National Academy Press, 2002.

Cita MLA (9th ed.)

National Research Council (U.S.). Mathematics Learning Study Committee, et al. Helping Children Learn Mathematics. National Academy Press, 2002.