Columbia subject headings:
Language and languages--Bibliography.
Translating and interpreting--Handbooks, manuals, etc.
Translating services--Directories.
Harvard subject headings:
Language and languages--Bibliography
Translating and interpreting--Handbooks, manuals, etc.
Translating services--Directories.
Princeton subject headings:
Directories.
Language and languages--Bibliography.
Translating and interpreting--Handbooks, manuals, etc.
Translating services--Directories.