Wright, S. M. (1972). Teaching the number system to intermediate educable mentally retarded pupils through the use of variety of methods.
Citazione stile Chigago Style (17a edizione)Wright, Scott Mathews. Teaching the Number System to Intermediate Educable Mentally Retarded Pupils Through the Use of Variety of Methods. 1972.
Citatione MLA (9a ed.)Wright, Scott Mathews. Teaching the Number System to Intermediate Educable Mentally Retarded Pupils Through the Use of Variety of Methods. 1972.
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