@book{Adiwarman201511723,
  title     = {Riba, Gharar dan Kaidah-Kaidah Ekonomi Syariah: Analisis Fikih dan Ekonomi},
  author    = {Adiwarman A. Karim},
  publisher = {Rajawali Pers},
  year      = {2015},
  isbn      = {978-979-769-857-7},
}