Columbia subject headings:
English language--Grammar, Comparative--German--Bibliography.
German language--Grammar, Comparative--English--Bibliography.
Harvard subject headings:
Contrastive linguistics--Bibliography.
English language--Grammar, Comparative--German--Bibliography.
German language--Grammar, Comparative--English--Bibliography.
Princeton subject headings:
English language--Grammar, Comparative--German--Bibliography.
German language--Grammar, Comparative--English--Bibliography.