Create revista-de-filologia-espannola.csl

Citational software does not have proper style for Spanish language journal on Spanish Language, Literature & Linguistics topic. The Revista de Filología Española is one of the most valued journals and its style is widely used outside in other publications.
I assume you do want et al here, so set et-al-min="10" you should also set et-al-use-first="1" (or whatever the number of authors that should appear before et al when you have 10 or more authors).