What is a synonym for reference?

Here are some synonyms for "reference," depending on the context:

General synonyms:

* Citation

* Mention

* Allusion

* Indication

* Pointer

* Clue

* Hint

* Guide

* Source

* Example

* Illustration

More specific synonyms:

* For a person: Recommendation, testimonial, vouching

* For a book or article: Bibliography, footnote, endnote

* For a dictionary or encyclopedia: Entry, definition, explanation

* For a website or document: Link, URL

The best synonym for "reference" will depend on the specific context in which you are using it.

Can you give me more information about what you are trying to say? That will help me choose the most appropriate synonym.