1. O.C. Ogbonna, O.P. Mafimisebi, Treatment of hydrocarbon contaminated drinking water in Niger Delta, Nigeria Using Low-Cost Adsorbents (Coconut Shell) Organization and Product Design Pairings View project Africa Management View project, Civ. Environ. Res. 8(April) (2016) 129–146. https://www.researchgate.net/publication/299588819.
2. M.O. Dinka, Safe Drinking Water: Concepts, Benefits, Principles and Standards, in: Water Challenges of an Urbanizing World, InTech, 2018. https://doi.org/10.5772/intechopen.71352
3. Water Purification Technologies;Ahmad,2019
4. Water pollution in Bangladesh and its impact on public health;Hasan;Heliyon,2019
5. National Geographic, 2020, Freshwater | National Geographic Society. https://www.nationalgeographic.org/idea/freshwater/.