Believe short quote about communist (6)
I believe the answer is:
credit
'believe' is the definition.
(thesaurus)
'short quote about communist' is the wordplay.
'short quote' becomes 'cit' (I can't justify this - if you can you should give a lot more credence to this answer).
'about' is an insertion indicator.
'communist' becomes 'red' (red is a kind of communist).
'cit' placed around 'red' is 'CREDIT'.
Can you help me to learn more?
(Other definitions for credit that I've seen before include "Positive balance in account" , "Believe - recognition" , "Praise; tick" , "Title" , "Believe; account entry" .)