Sagala, S. W. R. and Purba, H. (2016) “ANALYSIS OF PURCHASE ACCOUNTING INFORMATION SYSTEM BY USING THE COBIT FRAMEWORK 4.1 AT PT. TELEKOMUNIKASI INDONESIA, TBK BANDUNG”, 11th International Scholars Conference, 4(1), p. 30. doi: 10.35974/isc.v4i1.1731.