@book{Shofi20128047,
  title     = {Qawaid Ushul Al-Fiqh},
  author    = {Shofi al-Din Abdul Mumin bin Abdul Haq al-Baqhdadi al-Hanbali},
  publisher = {Daar Al-Fadhilah},
  year      = {2012},
  isbn      = {978-977-297-474-3},
}