Columbia subject headings:
Harvard subject headings:
Bilingualism--Germany.
Bilingualism.
Code switching (Linguistics)
Code switching (Linguistics)--Germany.
German language--Variation--Germany.
German language.
Spanish language--Variation--Germany.
Spanish language.
Princeton subject headings:
Bilingualism.
Code switching (Linguistics)
German language--Variation--Germany.
Spanish language--Variation--Germany.