Pamungkas, T. Y. P., and L. Mursyidah. “Efforts to Improve Discipline of Sidoarjo Regency Environmental and Hygiene Service Employees”. Indonesian Journal of Public Policy Review, Vol. 12, Oct. 2020, p. 10.21070/ijppr.v12i0.1154, doi:10.21070/ijppr.v12i0.1154.