Question

A reference to another literary text, poem, or mythological story is a(n) ?

Answer 1

Allusion

Reference to another literary text, poem, mythological story, or something else; brings meaning associated with other things into the poem

Answer 2

A reference to another literary text, poem, or mythological story is an allusion.

Allusion refers to a brief reference to a person, place, event or to another literay work made in a piece of writing or literary work. Allusion was very common in classic and romantic poetry which had many references to ancient mythology.

Allusion is just a passing comment and the writer expects the reader to have broad knowledge to spot the allusion and comprehend its importance in a text.