Palmer, E.H.
Routledge & Kegan Paul, 1956
Buku Referensi
Boyle, John Andrew
Luzac & Company, 1949
Buku Referensi
Najafi, Najmeh
Harper, 1958
Buku Teks SO
Arberry, Arthur John
Macmillan, [1958]
Buku Teks SO
Siregar, Meison Amir
Tamboer Press, 2000
Buku Teks SO