Philippines. National Census and Statistics Office. (1977). 1974 annual survey of establishments. NCSO.
Citazione stile Chigago Style (17a edizione)Philippines. National Census and Statistics Office. 1974 Annual Survey of Establishments. Manila: NCSO, 1977.
Citatione MLA (9a ed.)Philippines. National Census and Statistics Office. 1974 Annual Survey of Establishments. NCSO, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.