Fleming H Revel Co., 1947
Buku Teks
Cohen, John Michael, 1903-1989
Allen Lane, 1980
Buku Referensi
Jarman, Colin
Guinness Publishing, 1991
Buku Referensi
Bloomsbury, 1990
Buku Referensi
compiled and edited by Bill Wannan
Macmillan, 1974
Buku Referensi