Columbia subject headings:
Spanish language--Complement.
Spanish language--Grammar, Generative.
Spanish language--Mood.
Spanish language--Syntax.
Harvard subject headings:
Spanish language--Clauses.
Spanish language--Grammar, Generative.
Spanish language--Mood.
Spanish language--Syntax.
Princeton subject headings:
Spanish language--Clauses.
Spanish language--Grammar, Generative.
Spanish language--Mood.
Spanish language--Syntax.