G. Hutton, Rodriguez, U. E., Napitupulu, L., Thang, P., and Kov, P.,
“Economic impacts of sanitation in Southeast Asia : a four-country study conducted in Cambodia, Indonesia, the Philippines and Vietnam under the Economics of Sanitation Initiative (ESI)”. Water and Sanitation Program - East Asia and the Pacific, WSP-EAP, Jakarta, Indonesia, p. 144 p. : 18 fig., 8 plate, 93 tab., 2008.
P. Thang, Tuan, H., and Hutton, G.,
“Economic impacts of sanitation in Vietnam : a five-country study conducted in Cambodia, Indonesia, Lao PDR, the Philippines and Vietnam under the Economics of Sanitation Initiative (ESI)”. Water and Sanitation Program - East Asia and the Pacific, WSP-EAP, Jakarta, Indonesia, p. 125 p. : boxes, fig., tab., 2008.