Analisis sistem pengendalian internal dan implementasi manajemen risiko pada proses pengadaan barang dan jasa (e-procurement) : studi kasus pada PT KYZ (Persero) wilayah Kalimantan Selatan Kalimantan Tengah = Analysis of internal control system and risk management implementation in the procurement process of goods and service (e-procurement) based on the decision of the board of directors number 305 of the year 2010 (a case study at PT KYZ Persero in the area of South Kalimantan and Central Kalimantan / Mujennah - Mujennah, author (2013)