Cita APA (7a ed.)

Park, J., & Nunes, T. (2001). The development of the concept of multiplication.

Cita Chicago Style (17a ed.)

Park, J., y T. Nunes. The Development of the Concept of Multiplication. 2001.

Cita MLA (9a ed.)

Park, J., y T. Nunes. The Development of the Concept of Multiplication. 2001.