Do You Have to Cite Allusions?

If it's a well-known reference for your audience, it should be okay.

Do I need to cite an allusion?

Do not use external allusion in formal essays. Instead, use citations.

How do you right an allusion?

Allusion is an implied or indirect reference to a person, place, event, or circumstance in your writing. With allusion, you don't ever specifically say what the reference may be. Instead, you hint or suggest at what you may be referencing.