National Master Plumbers/Plumbing Engineering and Plumbing Contractor's Association of the Philippines. Technical Committee & Philippines. (1994). National plumbing code of the Philippines (R.A. 1378) (1993-94 rev.). s.n.
Chicago-referens (17:e uppl.)National Master Plumbers/Plumbing Engineering and Plumbing Contractor's Association of the Philippines. Technical Committee och Philippines. National Plumbing Code of the Philippines (R.A. 1378). 1993-94 rev. [Manila: s.n, 1994.
MLA-referens (9:e uppl.)National Master Plumbers/Plumbing Engineering and Plumbing Contractor's Association of the Philippines. Technical Committee och Philippines. National Plumbing Code of the Philippines (R.A. 1378). 1993-94 rev. s.n, 1994.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.