2017. THE STUDY OF IMPLEMENTATION OF ZAKAT AT JOINT OPERATION ENTITY (BADAN OPERASI BERSAMA) PT. BUMI SIAK PUSAKO- PERTAMINA HULU SIAK REGENCY OF RIAU PROVINCE. Penamas. 30, 2 (Nov 2017), 183–194. DOI:https://doi.org/10.31330/penamas.v30i2.124.