edited by Oscar Williams
Pocket Books, 1955
Buku Teks SO
English Language Services; editor, Charles J. Hirsch, James A. Curtin
Collier/Macmillan, 1971
Buku Teks SO
Puchta, Herbert
Cambridge University Press, 2014
Buku Teks SO
Stevenson, Burton Egbert
Henry Holt, 1942
Buku Referensi
Crymes, Ruth
Mouton, 1968
Buku Teks SO