M B · M. Brenner · M. F. · Martha Brenner
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Montones De Problemas | 978-1-57565-252-8 (1-57565-252-8) | 2007 |
| Quien Tiene Manchas? | 978-1-57565-251-1 (1-57565-251-X) | 2007 |
| Stacks of Trouble: Multiplication | 978-1-57565-098-2 (1-57565-098-3) | 2006 |