Goldman, Alvin I., author
MIT Press, 1993
Buku Teks
Cain, M.J., author
Polity, 2016
Buku Teks
edited by John Herman Randali, Justus Buchler
Barnes & Noble, 1950
Buku Teks
edited by Lorenzo Magnani and Ping Li
Springer, 2012
eBooks
edited by Herbert Morris
Stanford University Press, 1961
Buku Teks