Pengendalian internal sistem informasi akuntansi pendapatan rawat inap laboratorium Klinik RSUPN Cipto Mangunkusumo 1992-1994 = The internal control of the accountancy information system for in-patients revenues of the clinical laboratory 1992-1994 Dr.Cipto Mangunkusumo Hospital - Dewi Nurhana, author (Universitas Indonesia, 1996)