Somerset, W.
William Heinemann, 1952
Buku Teks SO
Eliot, Thomas Stearns
Harcourt, Brace & World, 1963
Buku Teks SO
Hillyer, Robert
Alfred A. Knopf, 1961
Buku Teks SO
Stevenson, Burton Egbert
Henry Holt, 1942
Buku Referensi
edited by Gerald DeWitt Sanders, John Herbert Nelson, M.L. Rosenthal
Macmillan, 1970
Buku Teks SO