Bardoody, A. J., & Dowker, A. The development of arithmetic concepts and skills: Constructing adaptive expertise.
Lua i Stíl Chicago (17ú heag.)Bardoody, Arthur J., agus Ann Dowker. The Development of Arithmetic Concepts and Skills: Constructing Adaptive Expertise.
Lua MLA (8ú heag.)Bardoody, Arthur J., agus Ann Dowker. The Development of Arithmetic Concepts and Skills: Constructing Adaptive Expertise.
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