Analisis hubungan antara agresivitas pajak proporsi komisaris independen dan kebijakan hutang perusahaan : studi pada perusahaan manufaktur terdaftar di BEI tahun 2008-2013 = Analysis of correlation between corporate tax aggressiveness independent commissioner s proportion and corporate debt policy the study of manufacturing companies listed in indonesia s stock exchange for the year 2008-2013 (Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2014)