Erika Cudworth, Stephen Hobden and Emilian Kavalski, editors
Routledge, Taylor & Francis Group, 2018
Buku Teks
Huszar, George B. de (George Bernard), 1919-1968, author
Barnes & Noble, 1951
Buku Teks
Forsythe, David P., 1941-, author
Cambridge University Press, 2000
Buku Teks
Hodgson, John S., author
Prentice-Hall, 1983
Buku Teks
Pirages, Dennis C.
Duxbury Press, 1978
Buku Teks