Gaya APA
Böwering, G. (1980).
The mystical vision of existence in classical Islam: The Qur'anic hermeneutics of the Sufi Sahl At-Tustari (d. 283/896). .
Berlin & New York:
Berlin & New York Walter de Gruyter.
Gaya MLA
Böwering, Gerhard.
"The mystical vision of existence in classical Islam: The Qur'anic hermeneutics of the Sufi Sahl At-Tustari (d. 283/896). ".
Berlin & New York:
Berlin & New York Walter de Gruyter,
1980.
Buku.