Bicol River Basin Development Program. (1982). Five-year development plan, 1983-1987. The Program.
Chicago-referens (17:e uppl.)Bicol River Basin Development Program. Five-year Development Plan, 1983-1987. Camarines Sur: The Program, 1982.
MLA-referens (9:e uppl.)Bicol River Basin Development Program. Five-year Development Plan, 1983-1987. The Program, 1982.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.