Berry, George Ricker
Chicago, Fallet Publishing, 1962
Buku Referensi
Warner, Rex, 1905-1986
The New American Library, 1958
Buku Teks SO
Hamilton, Edith
W.W. Norton, 1942
Buku Teks SO
Hamilton, Edith
W.W. Norton, 1942
Buku Teks SO
Graves, Robert, 1895-1985
Penguin Books, 1960
Buku Teks SO