Nasution, Nursery, Octaviani, Reni, Pratiwi, Sekar, AND Firdaus, Iqbal. "LINKING ENVIRONMENTAL MANAGEMENT SYSTEMS AND CIRCULAR ECONOMY PERFORMANCE: THE MEDIATING ROLE OF CIRCULAR ECONOMY CAPABILITIES IN INDONESIA’S COURIER SECTOR" International Conference on Vocational Business, Logistic, Accounting, Supply Chain, Tax (ICoBLAST) [Online], Volume 1 Number 1 (15 July 2026)