Muller is one of the leading reformed historians in the world today.  In his Dictionary of Latin and Greek Theological Terms and Post-Reformation Reformed Dogmatics, 4 vols., he summarizes the majority reformed views of the 1500’s and 1600’s.  It would be hard to quote a more authoritative name on the history of reformed theology than Richard Muller.  

Richard Muller on Common Grace and the Sincere Free Offer of the Gospel