Philippine Islands. Office of the Collector of Customs, Philippine Islands. Philippine Customs Service, & Shuster, W. M. Special report. Bureau of Print.
Citazione stile Chigago Style (17a edizione)Philippine Islands. Office of the Collector of Customs, Philippine Islands. Philippine Customs Service, e W. Morgan Shuster. Special Report. Manila: Bureau of Print.
Citatione MLA (9a ed.)Philippine Islands. Office of the Collector of Customs, et al. Special Report. Bureau of Print.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.