Style- Style is the manner of putting thoughts into words; a characteristic way of writing and speaking. It not only reveals the author's personality and voice, but it shows how they percieve the audience. Style is basically the image in the author's mind.
For example the book "The Catcher in the Rye" is written through the eyes of Holden Caufield... a sixteen year old boy. The writing style was basically Holden's personality.. which was pretty negative and depressing most of the time.