Febriyanti, Adelia, et al. “Pengaruh Profitabilitas Dan Biaya Operasional Terhadap Pajak Penghasilan Badan”. Innovative: Journal Of Social Science Research, vol. 3, no. 5, Oct. 2023, pp. 1381-9, http://j-innovative.org/index.php/Innovative/article/view/4719.