Reference work man has in house (9)

I believe the answer is:

thesaurus

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'reference work' is the definition.
(thesaurus is a kind of reference work)

'man has in house' is the wordplay.
'man has' becomes 'hes' (I can't justify this - if you can you should believe this answer much more).
'in' indicates putting letters inside.
'house' becomes 'Taurus' (Taurus is an example).
'hes' put within 'taurus' is 'THESAURUS'.

Can you help me to learn more?

(Other definitions for thesaurus that I've seen before include "Dictionary" , "Reference work" , "Wordbook" , "Wordy gathering" , "storehouse" .)

I've seen this clue in The Sun.

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