@book{Achmad200513188,
  title     = {Mutiara Pesantren Perjalanan Khidmah KH. Bisri Mustofa},
  author    = {Achmad Zainal Huda},
  publisher = {LKis Printing Cemerlang},
  year      = {2005},
  isbn      = {979-8451-11-2},
}