Brecher, Michael
Oxford University Press, 1959
Buku Teks
Spencer, Cornelia, author
John Day Company, 1948
Buku Teks
Singh, Anup, author
Balai Pustaka, 1950
Buku Klasik
Dawson, R. MacGregor
Universitas of Toronto Press , 1958
Buku Teks
Sheean, Vincent
Random House, 1960
Buku Teks