Columbia subject headings:
Italian language--Aspect.
Italian language--Indicative.
Italian language--Tense.
Italian language--Verb.
Harvard subject headings:
Italian language--Aspect.
Italian language--Indicative.
Italian language--Tense.
Italian language--Verb.
Princeton subject headings:
Italian language--Grammar--1950-.
Italian language--Indicative.
Italian language--Verb.