A reference to a well known person place or literary work is?

An "Allusion" is a reference to another literary work in a literary work. I remember that Canterbury Tales by Geofrey Chaucer has an allusion in it. I once got my definitions mixed up and was thinking this was called an alliteration. However, an alliteration is the repeating of vowels (assonance) or consonants (consonance). v.r, Dave