Simmons, James C.
Harmony Books, 1990
Buku Teks
Dunbar-Ortiz, Roxanne, 1939-, author
Beacon Press, 2016
Buku Teks
Andrews, Wayne
Macmillan, 1978
Buku Teks
Townsend, Camilla, author
Oxford University Press, 2017
eBooks
Marsden, William, author
Cambridge University Press, 2012
eBooks