Short work of fiction — page of calendar girl? (7)
I believe the answer is:
novella
'short work of fiction' is the definition.
(I've seen this before)
'aeur page of calendar girl?' is the wordplay.
I cannot really understand how this works, but
'girl?' could be 'ella' (girl's name) and 'ella' is found within the answer.
The remaining letters 'nov' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for novella that I've seen before include "Small book" , "Nothing like War and Peace" , "Short fictional work" , "Short work of fiction" , "Short fictional piece" .)