1. Dattani S., Spooner F., Ritchie H., Roser M., “Diarrheal Diseases”. https://ourworldindata.org/diarrheal-diseases#licence.
2. National Institute of Health Research and Development. “Basic Health Research 2018”. https://repository.badankebijakan.kemkes.go.id/id/eprint/3514/.
3. National Development Planning Agency, “Guidelines for Measuring Results-Based Housing and Settlement Development Achievements (outcome), Drinking Water Indicator Target Meta Data,” Jakarta, Indonesian, 2020.
4. WHO, “Diarrhoeal disease: Key Facts”. https://www.who.int/news-room/fact-sheets/detail/diarrhoeal-disease.
5. Waddington H., Snilstveit B., White H., Fewtrell L., “Sanitation and hygiene interventions to combat childhood diarrhoea in developing countries,” https://www.ircwash.org/sites/default/files/Waddington-2009-Water.pdf.