Masefield, Muriel, author
G. Bell and Sons, 1954
Buku Teks
Williamson, James A., author
Macmillan, 1962
Buku Teks
Griffiths, Percival, Sir, 1899-, author
Ernest Benn, 1969
Buku Teks
Williams, Basil, author
Oxford University, 1945
Buku Klasik
Larson, Laurence M., author
Holt , 1926
Buku Teks