Park, J., & Nunes, T. (2001). The development of the concept of multiplication.
Lua i Stíl Chicago (17ú heag.)Park, J., agus T. Nunes. The Development of the Concept of Multiplication. 2001.
Lua MLA (9ú heag.)Park, J., agus T. Nunes. The Development of the Concept of Multiplication. 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.