Reference to someone or something is the act of talking about them or mentioning them. A reference is a particular example of this.

Reference is the act of consulting someone or something in order to get information or advice.

Reference books are ones that you look at when you need specific information or facts about a subject.

A reference is a word, phrase, or idea which comes from something such as a book, poem, or play and which you use when making a point about something.

A reference is something such as a number or a name that tells you where you can obtain the information you want.

A reference is a letter that is written by someone who knows you and which describes your character and abilities. When you apply for a job, an employer might ask for references .

A reference is a person who gives you a reference, for example when you are applying for a job.

If you reference a particular book or writer, you make a precise reference to them in what you are saying or writing.

If you keep information for future reference, you keep it because it might be useful in the future.

You use with reference to or in reference to in order to indicate what something relates to.