whose or who's?

[Anonymous]

Some authors who's/whose lives and books have been shaped by the holocaust

[Tdol]

Whose- the lives belong to them; it's possessive. :D

[MikeNewYork]

Some authors who's/whose lives and books have been shaped by the holocaust

I agree with TDOL. The possesive forms of most pronouns do not contain apostrophes: his, hers, mine, whose, etc.

Who's is a contraction of "who is".