Corcoran, Neil
Longman, 1993
Buku Teks
Seward, William W.
Frederick Fell, 1963
Buku Teks
Hewison, Robert, 1943-
Methuen, 1995
Buku Teks
Lee, Brian
Longman , 1993
Buku Teks
edited with an introduction by Richard M. Dalfiume
Quadrangle Books, 1969
Buku Teks