"Análisis de La Celestina de Fernando de Rojas, adaptada por Vicens Vives: una aproximación a la obra maestra de la literatura española"
If you are writing a paper, citing a page number from a discredited or mismatched edition can invalidate your work. The updated Vicens Vives is the standard citation format in many Spanish philology departments.
If you are a Spanish literature student, you know the drill: your teacher has assigned La Celestina (or Tragicomedia de Calisto y Melibea ) by Fernando de Rojas, and the required edition is almost always the one.