| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Activities Manual for Tu dirás!, 4th | 978-1-4130-3163-8 (1-4130-3163-3) | 2006 | John R. Gutiérrez · Harry L. Rosser |
| Tu dirás! | 978-0-8384-2505-3 (0-8384-2505-4) | 2002 | John R. Gutiérrez · Harry L. Rosser |
| Tu Diras!: Activities Manual: Laboratory Listening Program Included | 978-0-8384-6124-2 (0-8384-6124-7) | 1998 | Ana Martinez-Lage · Laura Arman |