Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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

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