Kahssay, G. . “Filling Rate of Pit Latrines: A Case Study”. Zede: Journal of Ethiopian Engineers and Architects የኢትዮጵያ መሐንዲሶችና አርክቴክቶች መጽሔት, vol. 10, Jan. 2023, pp. 38-40, https://ejol.aau.edu.et/index.php/ZEDE/article/view/6330.