Listed are a couple of meanings for the word reference:
1. An act or instance of referring. 2. A mention; allusion. 3. Something for which a name or designation stands; denotation. 4. A direction in a book or writing to some other book, passage, etc. 5. A book, passage, etc., to which one is directed.
1. An act or instance of referring. 2. A mention; allusion. 3. Something for which a name or designation stands; denotation. 4. A direction in a book or writing to some other book, passage, etc. 5. A book, passage, etc., to which one is directed.