| 978-958-97057-8-0 | Advanced Conversation Privateacher English Program | OBM CORPORATION | Óscar Roberto Montañez Lacava
Luz América Posada Buitrago
Luz América Posada Buitrago
| 2003 |
| 978-958-97057-9-7 | Business Privateacher English Program | OBM CORPORATION | Óscar Roberto Montañez Lacava
Luz América Posada Buitrago
Luz América Posada Buitrago
| 2003 |
| 978-958-97057-6-6 | Everybody Book 1 One Privateacher English Program | OBM CORPORATION | Óscar Roberto Montañez Lacava
Luz América Posada Buitrago
Luz América Posada Buitrago
| 2003 |
| 978-958-97057-7-3 | Everybody Book 2 Two Privateacher English Program | OBM CORPORATION | Óscar Roberto Montañez Lacava
Luz América Posada Buitrago
Luz América Posada Buitrago
| 2003 |
| 978-958-97057-5-9 | Kids Privatecher English Program | OBM CORPORATION | Óscar Roberto Montañez Lacava
Luz América Posada Buitrago
| 2003 |
| 978-958-56832-0-4 | Privateacher | SPU Company | Óscar Roberto Montañez Lacava
| 2018 |
| 978-958-56832-2-8 | Privateacher Intermediate conversation | SPU Company | Óscar Roberto Montañez Lacava
| 2018 |
| 978-958-56832-3-5 | Privateacher advanced conversation | SPU Company | Óscar Roberto Montañez Lacava
| 2018 |
| 978-958-56832-4-2 | Privateacher Office talk | SPU Company | Óscar Roberto Montañez Lacava
| 2018 |