 Annas 1977, 1993 (ch. 12); Brewer 2005; J.M. Cooper 1999 (chs 14, 15); Hitz 2011; Kahn 1981; Milgram 1987; Nehamas 2010; Pakaluk 1998; Pangle 2003; Price 1989 (chs 4–7); Rogers 1994; Schollmeier 1994; Sherman 1987; Stern-Gillet 1995; Walker 2014; Whiting 1991.