| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Metodo simplificado de multiplicacion y calculo mental | Tapa blanda | 978-607-500-053-4 | 2009 |
| Speed Mathematics: Secret Skills for Quick Calculation | Paperback | 978-0-471-46731-1 | 2003 |
| Speed Mathematics: Secrets of Lightning Mental Calculation | " | 978-1-876627-33-1 | 2000 |
| Speed Mathematics: Secrets of Lightning Mental Calculation | Taschenbuch | 978-0-7016-3765-1 | |
| Speed Math for Kids: The Fast, Fun Way To Do Basic Calculations | Paperback | 978-0-7879-8863-0 | 2007 |
| Teach Your Children Tables | " | 978-1-875857-65-4 | 1998 |
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