Brodrick, Alan Houghton
Oxford University Press, 1942
Buku Teks
Bird, Isabella L
Oxford University Press, 1967
Buku Teks
American Council of Learned Societies, 1956
Buku Teks
Payne, Robert
William Heinemann, 1945
Buku Teks
Sesser, Stan
Picador, 1993
Buku Teks