Related Clues:

• Issue a ticket
• Mention as proof
• Write up, e.g.
• Quote, as a reference source
• Quote a source
• Single out
• Give as a reference, e.g.
• Write a footnote
• Use as a reference
• Attribute (to)
• Quote with authority
• Quote, as an authority
• Refer to, as a research paper
• Ticket, say
• Offer as an example