Indicate the language of each document available for download written in a foreign language
Whenever a link points to a document available for download in a different language than the main language of the page, then the language of the document should be indicated in the link text.
If it is not practical to add this information in the link texts (lack of space in the mock-up, for example), there are other solutions that can be used later in the development phase.
Nevertheless, this is a compromise solution that is less effective than directly optimizing the link text.
Another solution is to write the title of the document to be downloaded in the language of its content.