(2000). Implementing rules and regulations of the Philippine Clean Air Act of 1999: (Republic Act No. 8749). Department of Environment and Natural Resources.
Lua i Stíl Chicago (17ú heag.)Implementing Rules and Regulations of the Philippine Clean Air Act of 1999: (Republic Act No. 8749). Quezon City: Department of Environment and Natural Resources, 2000.
Lua MLA (9ú heag.)Implementing Rules and Regulations of the Philippine Clean Air Act of 1999: (Republic Act No. 8749). Department of Environment and Natural Resources, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.