Meaning of REFERENCE in English

■ noun

1》 the action of referring.

↘a mention or citation of a source of information in a book or article.

2》 a letter from a previous employer testifying to someone's ability or reliability.

■ verb provide (a book or article) with ~s.


with (or in ) ~ to in relation to; as regards.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.