[1]
Sulastri, U. and Nisa, F. 2026. Optimizing Income Tax Article 21: Simultaneous Use of Gross and Gross Up Methods (Case Study of PT. X). International Journal of Pertapsi. 3, 2 (Jan. 2026), 64–72. DOI:https://doi.org/10.9744/ijp.3.2.64-72.