Allusion to synonyms

What is another word for Allusion to?

• mention
• reference to
• reference
• mention of
• comment on
• remark about
• invocation
• appeal to
• remark of
• remark regarding
• statement about
• statement regarding
• announcement of
• indication of
• references
• citation
• calling on
• intimation
• pointer to
• clue to
• overtone of
• undertone of
• whisper of