Philippines (Republic). Bureau of the Census and Statistics. (1973). Economic census of the Philippines, 1967. [s.n.].
Citazione stile Chigago Style (17a edizione)Philippines (Republic). Bureau of the Census and Statistics. Economic Census of the Philippines, 1967. Manila: [s.n.], 1973.
Citatione MLA (9a ed.)Philippines (Republic). Bureau of the Census and Statistics. Economic Census of the Philippines, 1967. [s.n.], 1973.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.