Analisis penerapan pengendalian internal aset kontraktor kontrak kerja sama pada direktorat jenderal kekayaan negara kementerian keuangan studi pendekatan coso dan teori kontinjensi = Analysis of implementation of internal control of assets from production sharing contract of oil and gas upstream industry in the directorate general of state assets of ministry of finance study approach coso and contingency theory / Fitri Endang Rosita