R. H. Kuhlthau,
«Country studies in appropriate sanitation alternatives», vol. 6. World Bank, Washington, DC, USA, p. ii, 176 p.: fig., map, tab., 1979.
R. van Kerkvoorden,
«Information about the "Bandung" shallow well handpump». IWACO, Bandung, Indonesia, p. ca. 100 p.: fig., tab., photogr., 1979.