P. H. Local Wate City,
«Project report for the interim improvement of Tanay water district». Local Water Utilities Administration, Quezon City, The Philippines, p. 70 p. in various pagings, 1980.
G. E. Nepomuceno,
«Village water program». Philippines, Ministry of Local Governments and Community Development, Quezon City, The Philippines, p. 40 p.: fig., 1980.