Aini, Dwi, and Husni Mubarak. “ANALYSIS OF THE EFFECTIVENESS OF RETRIBUTION FOR CLEANING SERVICES AT THE ENVIRONMENTAL SERVICE OF BENGKALIS REGENCY”. International Journal of Financial and Investment Studies (IJFIS) 2, no. 2 (February 24, 2022): 50-55. Accessed June 15, 2026. https://ijfis.petra.ac.id/index.php/ijfis/article/view/87.