Gaya APA
Yusuf, M, Z.
(1993).
Akhlak Tasawuf
(
1)
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Sebastopol, CA:
Pustaka Al-husna.
Gaya MLA
Yusuf, Muhammad, Zain.
"Akhlak Tasawuf".
1
Sebastopol, CA:
Pustaka Al-husna,
1993.
Koleksi Umum.