| 978-958-8774-46-6 | English Comfandi The Big Adventure Students Book 9 | Educactiva | Marcela Isabel Alfonso Caro
| 2013 |
| 978-958-00-0639-8 | English for you, Student´s Book 4 | Educactiva | Marcela Isabel Alfonso Caro
Alejandro Moreno
David Correa
Gisela Bohorquez
Henry Aponte
Jean Paul Zapata
John Joven Cartagena
John Jairo Álvarez
John Jairo Hernandez
Jose Luis Jiménez
Julian Velasquez
Liliana Paez
Luis Fernando Torres
Luisa Uribe
Miguel Jiménez
Miguel Martínez
| 2018 |
| 978-958-776-028-6 | English for You 4, Student's Book | Educactiva | Marcela Isabel Alfonso Caro
Alejandro Moreno Rojas
Edwin Cruz
Gisela Bohorquez
Jean Paul Zapata
John Joven Cartagena
Jose Luis Jiménez
Juan David Correa
Julian Velasquez
Liliana Páez
Luis Fernando Torres
Luisa Uribe
Miguel Martínez
Miguel Jiménez
Yein Barreto
| 2014 |
| 978-958-776-191-7 | You Too Portafolio Teacher's Guide 4 | Educactiva | Dayan Ivette Ospitia Pintor
Marcela Isabel Alfonso Caro
| 2014 |
| 978-958-8860-09-1 | You Too Potfolio Teachers 4 | Educactiva | Marcela Isabel Alfonso Caro
| 2014 |
| 978-958-8847-51-1 | You Too Portfolio Workbook 4 | Educactiva | Marcela Isabel Alfonso Caro
| 2014 |
| 978-958-8847-45-0 | You Too Portfolio Students Book 4 | Educactiva | Dayan Ivette Ospitia Pintor
Marcela Isabel Alfonso Caro
| 2014 |
| 978-958-8847-01-6 | You Too Portfolio Student's Book 4 | Educactiva | Dayan Ivette Ospitia Pintor
Marcela Isabel Alfonso Caro
| 2013 |
| 978-958-8774-64-0 | You Too Portfolio Workbook 4 | Educactiva | Marcela Isabel Alfonso Caro
| 2013 |
| 978-958-8774-58-9 | You Too Portfolio Teacher's Guide 4 | Educactiva | Dayan Ivette Ospitia Pintor
Marcela Isabel Alfonso Caro
| 2013 |
| 978-958-8774-54-1 | You Too Portfolio Student's Book 4 | Educactiva | Dayan Ivette Ospitia Pintor
Marcela Isabel Alfonso Caro
| 2013 |
| 978-958-8774-50-3 | English Comfandi, The Big Adventure Workbook 9 | Educactiva | Marcela Isabel Alfonso Caro
| 2013 |
| 978-958-705-095-0 | Be Happy F | SM Educación | Marcela Isabel Alfonso Caro
Fernando Cortés Ramos
| 2006 |
| 978-958-45-2965-7 | Cd Student´s Book You Too 4 | Educactiva | Marcela Isabel Alfonso Caro
| 2010 |
| 978-958-8316-78-9 | desde las experiencias pedagogicas de los docentes de lengua | Universidad Pedagógica Nacional | Marcela Isabel Alfonso Caro
Mauricio Ochoa Alba
| 2009 |
| 978-958-45-2117-0 | Workbook You Too 4 | Educactiva | Marcela Isabel Alfonso Caro
Henry Aponte Puello
| 2010 |
| 978-958-45-1113-3 | You Too! 4 | Educactiva | Marcela Isabel Alfonso Caro
John Joven Cartagena
| 2009 |
| 978-958-705-182-7 | New Be Happy F Workbook | SM Educación | Marcela Isabel Alfonso Caro
| 2007 |
| 978-958-705-181-0 | New Be Happy E Workbook | SM Educación | Marcela Isabel Alfonso Caro
| 2007 |
| 978-958-705-180-3 | New Be Happy D Workbook | SM Educación | Marcela Isabel Alfonso Caro
| 2007 |
| 978-958-705-166-7 | New Be Happy C Workbook | SM Educación | Marcela Isabel Alfonso Caro
| 2007 |
| 978-958-705-175-9 | New Be Happy B Workbook | SM Educación | Marcela Isabel Alfonso Caro
| 2007 |
| 978-958-705-179-7 | New Be Happy A Workbook | SM Educación | Marcela Isabel Alfonso Caro
| 2007 |