Abu Shadi, Khalid Ahmad Investasi akhirat / Dr. Khalid Abu Syadi ; penerjemah : H. Achmad Faozan - Jakarta : Pustaka Al-Kautsar, 2004 - xx, 356 p. ; 21 cm. ISBN: 9795922440 RM52.50 Subjects--Topical Terms: Religious life--Islam