Al Qushayri

title	ISBN-13 (ISBN-10)	year of publica- tion	other author(s)
Principles of Sufism	978-0-933782-20-4 (0-933782-20-9)	1992	B.R. Von Schlegell
Principles of Sufism	978-0-933782-21-1 (0-933782-21-7)	1992	B.R. Von Schiegell