Analisis kesesuaian kegiatan usaha emiten syariah terhadap prinsip-prinsip syariah di pasar modal Indonesia : studi terhadap pencatatan saham PT. XYZ, Tbk. sebagai saham syariah = Compliance analysis of a sharia listed company's line of business regarding the principles of sharia capital market in Indonesia : study on PT. XYZ Tbk.'s stock listing (Fakultas Hukum Universitas Indonesia, 2013)