E. F. Sonbay, A. Djamhuri, and Z. Baridwan, “Tax Planning Value Added Tax (Vat) and Article 4 (2) Tax on Income In Indonesia”, Int. res. j. bus. stud., vol. 15, no. 1, pp. 53–62, Sep. 2024, doi: 10.21632/irjbs.15.1.53-62.