Cita APA (7th ed.)

United States. (1977). Customs tariff of the Philippine Islands, 1909: Notes on tariff revision. University of the Philippines Library.

Cita Chicago (17th ed.)

United States. Customs Tariff of the Philippine Islands, 1909: Notes on Tariff Revision. Quezon City: University of the Philippines Library, 1977.

Cita MLA (9th ed.)

United States. Customs Tariff of the Philippine Islands, 1909: Notes on Tariff Revision. University of the Philippines Library, 1977.