Philippines (Republic). Bureau of the Census and Statistics. Report. [s.n.
Citazione stile Chigago Style (17a edizione)Philippines (Republic). Bureau of the Census and Statistics. Report. Manila: [s.n.
Citatione MLA (9a ed.)Philippines (Republic). Bureau of the Census and Statistics. Report. [s.n.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.