| 978-607-493-198-3 | Comet 3 Teacher's Guide | U.D. Publishing | Izabella Hearn
Michele Guerrini
| 2012 |
| 978-607-493-320-8 | Comet 3 Guía del maestro | U.D. Publishing | Izabella Hearn
Mady Musiol
Michele Guerrini
| 2012 |
| 978-607-493-319-2 | Comet 2 Guía del maestro | U.D. Publishing | Izabella Hearn
Mady Musiol
Michele Guerrini
| 2012 |
| 978-607-493-316-1 | Comet 4 Student's Book | U.D. Publishing | Izabella Hearn
Mady Muisol
Michele Guerrini
| 2012 |
| 978-607-493-315-4 | Comet 3 Student's Book | U.D. Publishing | Izabella Hearn
Mady Muisol
Michele Guerrini
| 2012 |
| 978-607-493-314-7 | Comet 2 Student's Book | U.D. Publishing | Izabella Hearn
Mady Muisol
Michele Guerrini
| 2012 |
| 978-607-493-317-8 | Comet 1 Student's Book | U.D. Publishing | Izabella Hearn
Mady Muisol
Michele Guerrini
| 2012 |
| 978-607-493-197-6 | Comet Pack Latinoamérica 4 | U.D. Publishing | Izabella Hearn
Mady Musiol
Michele Guerrini
| 2012 |
| 978-607-493-195-2 | Comet Pack Latinoamérica 3 | U.D. Publishing | Izabella Hearn
Mady Musiol
Michele Guerrini
| 2012 |
| 978-607-493-194-5 | Comet Pack Latinoamérica 2 | U.D. Publishing | Izabella Hearn
Mady Musiol
Michele Guerrini
| 2012 |
| 978-607-493-193-8 | Comet Pack Latinoamérica 1 | U.D. Publishing | Izabella Hearn
Mady Musiol
| 2012 |
| 978-607-493-136-5 | Comet Pupil´s Book | U.D. Publishing | Izabella Hearn
Mady Musiol
Michelle Guerrini
| 2011 |
| 978-607-493-196-9 | Comet 2 Teacher's Guide | U.D. Publishing | Izabella Hearn
Michelle Guerrini
| 2012 |
| 978-607-493-156-3 | Comet 3 Student´s Book | U.D. Publishing | Izabella Hearn
Mady Musiol
Michele Guerrini
| 2011 |
| 978-607-493-155-6 | Comet 2 Student´s Book | U.D. Publishing | Izabella Hearn
Mady Musiol
Michele Guerrini
Sara Elena Palacios Gutiérrez
| 2011 |
| 978-607-493-154-9 | Comet 1 Student´s Book | U.D. Publishing | Izabella Hearn
Mady Musiol
Michele Guerrini
| 2011 |
| 978-607-493-153-2 | Comet 3 Activity Book | U.D. Publishing | Izabella Hearn
Mady Musiol
Michele Guerrini
| 2011 |
| 978-607-493-151-8 | Comet 4 Activity Book | U.D. Publishing | Izabella Hearn
Mady Musiol
Michele Guerrini
| 2011 |
| 978-607-493-150-1 | Comet 2 Activity Book | U.D. Publishing | Izabella Hearn
Mady Musiol
Michele Guerrini
| 2011 |
| 978-607-493-149-5 | Comet 4 Student´s Book | U.D. Publishing | Izabella Hearn
Mady Musiol
Michele Guerrini
| 2011 |
| 978-607-493-135-8 | Comet 4 Activity Book | U.D. Publishing | Izabella Hearn
Mady Musiol
Michelle Guerrini
| 2011 |