APA (7 ম সংস্করণ) উদ্ধৃতি

Não informado. (1979). Focus on Learning Problems in Mathematics. Center for Teaching Learning on Mathematics.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Não informado. Focus on Learning Problems in Mathematics. Framingham, Mass: Center for Teaching Learning on Mathematics, 1979.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Não informado. Focus on Learning Problems in Mathematics. Center for Teaching Learning on Mathematics, 1979.

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