Tipos de personalidadDon Richard Riso, Russ Hudson, Concepción Rodríguez González · First published 2012Open the Tome
Die neun Typen der Persönlichkeit und das Enneagramm. ( MensSana)Don Richard Riso · First published 2000Open the Tome
The POWER OF THE ENNEAGRAM A NEW TECHNOLOGY OF SELF-DISCOVERYDon Richard Riso · First published 1996Open the Tome
