Pincas, Anita
Macmillan, 1983
Buku Teks SO
Dixson, Robert J.
Regents Publishing, 1971
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
compiled and translated by Ismail Mazhar
The Renaissance Bookshop, 1950
Buku Referensi