The verb 'help' takes to-infinitives and bare infinitives but bare infinitives are said to be the most common in casual text; as also used in this example sentence.

Style is to the writer what color is to the painter.

Your essay is admirable in regard to style.

Compare the style of those three letters.

Compare the style of those letters.

The writer has a parenthetic style.

This is a writing style different from genuine English.

Written in plain style, as it is, his paper is easy to read.

The author has a beautiful style.

The writer has an excellent style.