| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Spanish Now! Level 1 | 978-0-7641-2933-9 (0-7641-2933-3) | 2005 | Ruth Silverstein · Allen Pomerantz Ph.D. |
| Spanish Now! Level 1 with CDs | 978-0-7641-7774-3 (0-7641-7774-5) | 2005 | Ruth Silverstein · Allen Pomerantz Ph.D. |