Columbia subject headings:
French language--Standardization--History.
Italian language--Standardization--History.
Romance philology.
Harvard subject headings:
French language--Middle French, 1300-1600--Standardization.
French language--Middle French, 1300-1600--Usage.
Italian language--Early modern, 1500-1700--Standardization.
Italian language--Early modern, 1500-1700--Usage.
Princeton subject headings: