McMahon, Glenda Chatterton, Ken Latrine designed without superstructure Latrine designed without superstructure WEDC;Infrastructure for all;Technical;Diagram;International and Development Communication 2019-05-08
    https://repository.lboro.ac.uk/articles/figure/Latrine_designed_without_superstructure/7910459
10.17028/rd.lboro.7910459.v1