What is a synonym for citation?

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

General:

* Reference

* Quotation

* Mention

* Note

* Footnote

* Endnote

* Bibliography entry

* Source

Legal:

* Summons

* Subpoena

* Warrant

* Order

Academic:

* Documentation

* Attributive note

* Source acknowledgement

The best synonym will depend on the specific context of the word "citation".