UMARI, B. (1994). Sistimatika tasawwuf. Ramadhani.
Chicago Style (17th ed.) CitationUMARI, Barmawi. Sistimatika Tasawwuf. Solo: Ramadhani, 1994.
MLA (9th ed.) CitationUMARI, Barmawi. Sistimatika Tasawwuf. Ramadhani, 1994.
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