Is the possessive pronoun always necessary?

Question

When asking if these books are his, and we need to clarify "him" from "her", then does one have to say "¿Son sus libros de él?" or could one simply say ¿Son libros de él?, dispensing with the "sus"?

Answer 1

Hi! I would say ¿son sus libros? or ¿son los libros de él?. You don't need to say "sus libros de él".

OK "coffeelate", I meant to say ESTOS..., not "SON... but you don't seem to be bothered by that and your site says you're fluent, so "son... is OK then??? - t8805jg, Nov 1, 2011