Related Clues:

• Formally honor
• Issue a ticket
• Mention as proof
• Show appreciation to
• Bear in mind
• 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
• Quote with authority
• Quote, as an authority
• Refer to, as a research paper