U. S. Bureau of Insular Affairs & iGLibrary (online resource). (1911). Summary of Commerce of the Philippine Islands. Photoduplication Service. University of the Philippines Library.
Citação do estilo Chicago (17ª ed.)U. S. Bureau of Insular Affairs e iGLibrary (online resource). Summary of Commerce of the Philippine Islands. Quezon City: Photoduplication Service. University of the Philippines Library, 1911.
Citação MLA (9ª ed.)U. S. Bureau of Insular Affairs e iGLibrary (online resource). Summary of Commerce of the Philippine Islands. Photoduplication Service. University of the Philippines Library, 1911.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.