ST EDITORIAL, INC. · St Editorial
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Etica y valores/ Ethics and Values | 978-970-9807-06-6 (970-9807-06-4) | 2007 |
| Filosofia | 978-607-7529-10-1 (607-7529-10-9) | 2009 |
| Filosofia/ Philosophy | 978-970-9807-46-2 (970-9807-46-3) | 2007 |
L.S. · R. L · R. Leon · R. S. · Roberto Leon