Lloyd, Trevor
British Commonwealth and American Heritage, 1971
Buku Teks
Lloyd, Trevor Owen
American Heritage Press, 1971
Buku Teks
edited by Julie Peters and Andrea Wolper
Rouledge, 1995
Buku Teks
Robertson, Arthur Henry, 1913-, author
Manchester University Press, 1992
Buku Teks
December, John, author
Sams, 1994
Buku Teks