@book{Abi20038519,
  title     = {At-Tabshirah fi Ushul Al-Fiqh},
  author    = {Abi Ishaq Ibrahim bin Ali bin Yusuf Asy-Syairazi},
  publisher = {Dar Al-Kotob Al-Ilmiyah},
  year      = {2003},
  isbn      = {2-7451-3851-0},
}