Authoritative book about poor dad being compliant (8)
I believe the answer is:
biddable
'compliant' is the definition.
('biddable' can be a synonym of 'compliant')
'authoritative book about poor dad' is the wordplay.
'authoritative book' becomes 'bible' (I've seen this before).
'about' is an insertion indicator.
'poor' indicates anagramming the letters.
'dad' anagrammed gives 'dda'.
'bible' enclosing 'dda' is 'BIDDABLE'.
'being' is the link.
(Other definitions for biddable that I've seen before include "Easily persuaded" , "Willing to obey" , "Obedient" , "Meekly ready to follow instructions" , "Easily controlled" .)