Brown, Lester R., author
W.W. Norton, 1981
Buku Teks
Edgell, David L. (David Lee), Sr., 1938
Routledge, 2016
Buku Teks
Cassedy, Edward S., author
Cambridge University Press, 2000
Buku Teks
1977,
Buku Teks
edited by Charles W. Donovan
Imperial College Press, 2015
Buku Teks