One may read this either way (3,4)
I believe the answer is:
aga saga
I believe this is a double definition.
'one may read this' is the first definition.
(type of novel)
'either way' is the second definition.
(Other definitions for aga saga that I've seen before include "Country work" , "The kind of book" , "popular novel" , "form of rural fiction" , "Story concerning the English middle classes" .)