Carpenter, Nan Cooke
Twayne Publishers, 1967
Buku Teks
Talon, Henri A.
London Longmans 1956
Buku Teks
Mottram, R.H.
London Longmans 1953
Buku Teks
edited by Sir Herbert Grierson
Oxford University Press, 1951
Buku Teks
Hyde, Harford Montgomery, author
Colorado Alan Swallow , 1948
Buku Teks