総務省統計局, 経済産業省大臣官房調査統計グループ編 = Tabulation regarding sales (income) and expenses of enterprises / Statistics Bureau Ministry of Internal Affairs and Communications and Research and Statistics Department Minister's Secretariat Ministry of Economy, Trade and Industry. -- 総務省統計局, 2014.3. -- (経済センサス / 総務省統計局編集 . 活動調査報告 ; 平成24年第4巻).