Dyfyniad APA

Benjamin, A., & Shermer, M. (2006). Secrets of mental math: The mathemagician's guide to lightning calculation and amazing math tricks. Three Rivers Press.

Dyfyniad Arddull Chicago

Benjamin, Arthur, and Michael Shermer. Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks. New York: Three Rivers Press, 2006.

Dyfyniad MLA

Benjamin, Arthur, and Michael Shermer. Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks. Three Rivers Press, 2006.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.