1. National Solid Waste Management Commission. Solid Waste Management Division. (n.d.). Retrieved October 1, 2022, from https://nswmc.emb.gov.ph/?page_id=4082
2. Facing America's trash: What next for municipal solid waste? US Congress, Office of Technology Assessment. OTA-0-424. Washington, DC: US Government Printing Office, 1989;Lifset R.J.;J. Policy Anal. Manage.,1992
3. Golden, B.L., Assad, A.A., & Wasil, E.A. (2002). Routing vehicles in the real world: Applications in the solid waste, beverage, food, dairy, and newspaper industries. In The vehicle routing problem (pp. 245–286). Society for Industrial and Applied Mathematics.
4. Www.senate.gov.ph. (n.d.). Retrieved October 1 2022 from https://www.senate.gov.ph/publications/SEPO/AAG_Philippine%20Solid%20Wastes_Nov2017.pdf
5. Solving an urban waste collection problem using ants heuristics