1. Abraham, B., Kakumbi, G. M., Alam, M. M. & Von Muench, E. (2011). Alternative solutions for challenging environments: A look at UNICEF-assisted ecosan projects worldwide. http://www.wedc.lboro.ac.uk/resources/conference/35/Abraham-B-1220.pdf.
2. Chitradurga Srinivasa Murthy, S. (2018). When the pits fill up: Fecal Sludge “Management” in urban India. UC Berkeley. ProQuest ID: ChitradurgaSrinivasaMurthy_berkeley_0028E_17952. Merritt ID: ark:/13030/m5rv5kth. https://escholarship.org/uc/item/4hw76729.
3. Chunga, R. (2016). The drivers of demand for ecological sanitation & barriers affecting its adoption in low-income and high population density urban areas. PhD thesis submitted to London School of Hygiene & Tropical Medicine. https://doi.org/10.17037/PUBS.02572613
4. The use of human waste for peri-urban agriculture in Northern Ghana