Gaya APA
Al-Azizi, A, S.
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Umar Bin Khatab Ketangguhan Hati Singa Nabi SAW
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Jakarta:
Diva Press.
Gaya MLA
Al-Azizi, Abdul, Syukur.
"Umar Bin Khatab Ketangguhan Hati Singa Nabi SAW".
1
Jakarta:
Diva Press,
2021.
Buku.