Park, J., & Nunes, T. (2001). The development of the concept of multiplication.
Cita Chicago (17th ed.)Park, J., i T. Nunes. The Development of the Concept of Multiplication. 2001.
Cita MLA (9th ed.)Park, J., i T. Nunes. The Development of the Concept of Multiplication. 2001.
Atenció: Aquestes cites poden no estar 100% correctes.