Anggraeni, Basuki, and Rahmat Setiawan. “THE IMPACT OF DIVERSIFICATION AND OWNERSHIP STRUCTURE ON EFFICIENCY: EVIDENCE FROM INDONESIA”. PalArch’s Journal of Archaeology of Egypt / Egyptology, vol. 18, no. 4, Feb. 2021, pp. 1644-65, https://www.archives.palarch.nl/index.php/jae/article/view/6549.