Philippines (Republic). National Economic Council. (1967). Economic survey report of the Bicol region, 1967. [s.n.].
Citazione stile Chigago Style (17a edizione)Philippines (Republic). National Economic Council. Economic Survey Report of the Bicol Region, 1967. Manila: [s.n.], 1967.
Citatione MLA (9a ed.)Philippines (Republic). National Economic Council. Economic Survey Report of the Bicol Region, 1967. [s.n.], 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.