U. S. Bureau of Insular Affairs & iGLibrary (online resource). (1911). Summary of Commerce of the Philippine Islands. Photoduplication Service. University of the Philippines Library.
Lua i Stíl Chicago (17ú heag.)U. S. Bureau of Insular Affairs agus iGLibrary (online resource). Summary of Commerce of the Philippine Islands. Quezon City: Photoduplication Service. University of the Philippines Library, 1911.
Lua MLA (9ú heag.)U. S. Bureau of Insular Affairs agus iGLibrary (online resource). Summary of Commerce of the Philippine Islands. Photoduplication Service. University of the Philippines Library, 1911.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.