Nasir, Jamal J.
Graham & Trotman, 1994
Buku Teks SO
Schacht, Joseph
Clarendon Press, 1964
Buku Teks
Abdurrahman Raden Aji Haqqi
CERT Publications Sdn. Bhd, 2009
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Coulson, Noel J.
AldineTransaction, 2011
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Rohe, Mathias
Brill, 2015
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