Saragih, A. E., Y. C. B. Sembiring, and M. R. F. B. . Purba. “PENGARUH LEVERAGE, PROFITABILITY, UKURAN PERUSAHAAN DAN PROPORSI KEPEMILIKAN INSTITUSIONAL TERHADAP TAX PLANNING”. Jurnal Riset Akuntansi &Amp; Keuangan, vol. 9, no. 1, Feb. 2023, pp. 1-19, https://ejournal.ust.ac.id/index.php/JRAK/article/view/2451.