The book Dale valor a tu vida has been registred with the ISBN 978-9962-40-005-9 in Agencia Panameña del ISBN. This book has been published by Serapis Bey Editores in 1997 in Panama.
In addition to this record, there are another 200 books published by the same publisher. Standing out: El libro del co1cimiento y la ley written by Erick Rueda and Tellis S. Papastavro La voz del "yo soy" written by Actividad "Yo Soy" La voz del yo soy (1937) written by Actividad "Yo Soy" La voz del yo soy (1938) written by Actividad "Yo Soy" and La voz del yo soy 1939 written by Actividad "Yo Soy".
Fox, E. (1997). Dale valor a tu vida. Panama: Serapis Bey Editores
This book has been published in Panama, but we don't know exactly the city or state of the publisher. Although just the country will be enough to reference your book on your thesis. It was published in 1997.