| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Graded Spanish Reader: Primera Etapa | 978-0-618-52780-9 (0-618-52780-X) | 2005 | Leonor Alvarez de Ulloa |
| Graded Spanish Reader: Primera Etapa, Alternate | 978-0-669-35391-4 (0-669-35391-4) | 1995 | Leonor Ulloa |
| Ulloa Graded Spanish Reader Level One Primera Etapa Fourth Edition Plusulloa Graded Spanish Reader Level Two Segunda Etapa Fifth Edition | 978-0-547-19569-8 (0-547-19569-9) | 2008 | Leonor Alvarez De Ulloa |
Great Source Education Group Inc · HOUGHTON MIFFLIN · HOUGHTON MIFFLIN HARCOURT