Bicol River Basin Development Program. (1982). Five-year development plan, 1983-1987. The Program.
Lua i Stíl Chicago (17ú heag.)Bicol River Basin Development Program. Five-year Development Plan, 1983-1987. Camarines Sur: The Program, 1982.
Lua MLA (9ú heag.)Bicol River Basin Development Program. Five-year Development Plan, 1983-1987. The Program, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.