Ardiana, Titin Eka, Nanang Cendriono, and Rizki Rachmadia. 2026. “The Effect of Auditor Independence on Internal Auditor Performance at Muhammadiyah Business Charities in Ponorogo Regency”. SUSTAINABLE 6 (1):142-56. https://doi.org/10.30651/stb.v6i1.30585.