Columbia subject headings:
Language and languages--Foreign elements--Romani.
Languages in contact.
Romani language--Influence on foreign languages.
Harvard subject headings:
Language and languages--Variation
Languages in contact.
Languages, Mixed.
Languages, Secret.
Romani language--Influence on foreign languages.
Princeton subject headings:
Language and languages--Foreign elements--Romany.
Languages in contact.
Romani language--Influence on foreign languages.