na INLIS000000000007673 20130612095631 Ind 010-061300000007673 Ind 149.3 149.3, Sou a Sou'yb, Yusuf Aliran kebatinan (mistik) dan perkembangannya, Yusuf Sou'yb 1988 Medan x, 119 hlm, 21 cm Mistik