Gaya APA
al-Ashqar, U, S, A.
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Beirut-Libanon:
Dar al-Salam.
Gaya MLA
al-Ashqar, Umar, Sulayman, Abdullah.
"al-Rusul wa al-Risalat".
Beirut-Libanon:
Dar al-Salam,
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Buku.