TY - JOUR T1 - Impact of the joint provision of audit and non-audit services on the quality of external assurance of sustainability disclosures JO - Revista Contabilidade & Finanças A1 - Silveira, Gabriela Borges A1 - Bellen, Hans Michael van SN - 1519-7077 UL - 10.1590/1808-057x20242034.en VL - 36 Y1 - 2025 PB - Brasil ER -