APA aipamena

Stephen S. Willoughby. (2009). Real math: Grade 4. Columbus, OH: SRA/McGraw-Hill.

Chicago Style aipamena

Stephen S. Willoughby. Real Math: Grade 4. Columbus, OH: SRA/McGraw-Hill, 2009.

MLA aipamena

Stephen S. Willoughby. Real Math: Grade 4. Columbus, OH: SRA/McGraw-Hill, 2009.

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