Style of speech stars found in books (12)

I believe the answer is:

dictionaries

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'books' is the definition.
(dictionary is a kind of book)

'style of speech stars' is the wordplay.
'style of speech' becomes 'diction' (I can't explain this - if you can you should believe this answer much more).
'stars' becomes 'aries' (I've seen this before).
'diction'+'aries'='DICTIONARIES'

'found in' acts as a link.

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(Other definitions for dictionaries that I've seen before include "reference books" , "works of reference" .)

I've seen this clue in The Telegraph.

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