by Huub J. W. M. Boelaars, OFM.Cap. $15.00
by Adnan Hasan Baharits $5.00
by Idries Shah $8.00
by Mare Vanden Berghe, CICM $7.00
by Abdul Aziz asy-Syinnawi $6.00
by K.H. Anwar Sanusi $9.00