Teresa M. Bejan, Mere Civility: Disagreement and the Limits of Toleration (Cambridge, Massachusetts, & London, England: Harvard U. Press, 2017).
John R. Bowlin, Tolerance Among the Virtues (Princeton & Oxford: Princeton U. Press, 2016).
Keith J. Bybee, How Civility Works (Stanford, CA: Stanford Briefs/Sanford U. Press, 2016).