Dyfyniad APA

Benjamin, A. (2006). Secrets of mental math: The mathemagician's guide to lightning calculation. Three rivers.

Dyfyniad Arddull Chicago

Benjamin, Arthur. Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation. New York: Three rivers, 2006.

Dyfyniad MLA

Benjamin, Arthur. Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation. Three rivers, 2006.

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