Kazin, Alfred, 1915-, author
Harcourt Brace Jovanovich, 1970
Buku Teks
Lee, Brian, author
Longman , 1993
Buku Teks
Martin, Jay, author
Prentice-Hall, 1967
Buku Teks
Fitzpatrick, Peter, author
Edward Arnold, 1979
Buku Teks
edited by John Morán González
Cambridge University Press, 2016
Buku Teks