Hallam, Henri
J.M. Dent & Sons LTD, 1936
Buku Teks
Pease, Edward R., author
Frank Cass, 1963
Buku Teks
Hall, Walter Phelps, author
Ginn and Company, 1953
Buku Teks
Harris, Phil, author
Weidenfeld and Nicolson, 1993
Buku Teks
Richmond, David, author
Macmillan, 1994
Buku Teks