Various is the correct author for any book with multiple unknown authors, and is acceptable for books with multiple known authors, especially if not all are known or the list is very long (over 50).
If an editor is known, however, Various is not necessary. List the name of the editor as the primary author (with role "editor"). Contributing authors' names follow it.
Note: WorldCat is an excellent resource for finding author information and contents of anthologies.
Mezcla de personajes, reflexiones, anécdotas, instantes aleatorios... Un camino por muchas esquinas de la memoria. Algunos cuentos me gustaron mucho, otros no tanto, otros los vuelvo a leer y les encuentro su encanto. Divertido conocer mi ciudad desde la experiencia de otros.