I would avoid dealing with the "Works" and first get hold of Perfectionism, by Benjamin Breckinridge Warfield, ed. by Samuel G. Craig, Presbyterian & Reformed, 1958, 1974 or any later printings. Contains 9 articles, which reduces the 1000 pages written by Warfield to a more manageable, and in the editor's view, the most enduringly important quantity of Warfield's contributions on the subject.
