Philippine Islands. Office of the Collector of Customs, Philippine Islands. Philippine Customs Service, & Shuster, W. M. Special report. Bureau of Print.
Cita Chicago (17th ed.)Philippine Islands. Office of the Collector of Customs, Philippine Islands. Philippine Customs Service, i W. Morgan Shuster. Special Report. Manila: Bureau of Print.
Cita MLA (9th ed.)Philippine Islands. Office of the Collector of Customs, et al. Special Report. Bureau of Print.
Atenció: Aquestes cites poden no estar 100% correctes.