| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Activities Manual Answer Key with Lab Audioscript for Tu dirás!, 4th | 978-1-413O-3164-5 (1-413O-3164-1) | 2006 | Ana Martinez-Lage · Harry L. Rosser |
G. C. · J C · J. G. · J. Gutierrez · John C. · John G. · John Gutiérrez