Rosyadhi, R. I., B. P. . Sanjaya, I. . Pahala, and P. . Wahono. “Income Tax Article 21 Planning Strategy for Corporate Tax Burden Efficiency: A Case Study at PT IHP”. TOFEDU: The Future of Education Journal, vol. 4, no. 6, June 2025, pp. 1691-8, doi:10.61445/tofedu.v4i6.595.