Small work by American in MoMA fenced off (2,4,3,3)
I believe the answer is:
of mice and men
'small work by american' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'in moma fenced off' is the wordplay.
'off' is an anagram indicator.
'in'+'moma'+'fenced'='inmomafenced'
'inmomafenced' anagrammed gives 'OF MICE AND MEN'.
Can you help me to learn more?
(Other definitions for of mice and men that I've seen before include "J. Steinbeck novel" , "John Steinbeck novel" , "American novel" , "novella" , "Dealing with people with computer devices" .)