Philippine Islands. Department of Commerce and Police. Annual report. Bureau of Print.
Citazione stile Chigago Style (17a edizione)Philippine Islands. Department of Commerce and Police. Annual Report. Manila: Bureau of Print.
Citatione MLA (9a ed.)Philippine Islands. Department of Commerce and Police. Annual Report. Bureau of Print.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.