Analisis pengaruh manajemen laba (earning management) terhadap pengungkapan tanggung jawab sosial korporat (corporate social responsibility) : studi empiris pada perusahaan-perusahaan nonkeuangan yang terdaftar di Bursa Efek Indonesia periode 2008-2010 = The analysis of earning management effect on CSR (corporate social responsibility) disclosures : study empirical of nonfinancial companies listed in Indonesia Stock Exchange period 2008-2010