| 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 | Justo C. Ulloa |
| Graded Spanish Reader: Segunda Etapa | 978-0-669-35392-1 (0-669-35392-2) | 1995 | Justo 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 | Justo C. Ulloa |
A. D. · A. De · ALVAREZ D · L a · L. Alvarez · L.D. · Leonor Ulloa
Great Source Education Group Inc · HOUGHTON MIFFLIN · HOUGHTON MIFFLIN HARCOURT