U. S. Bureau of Insular Affairs. (1977). Summary of commerce of the Philippine Islands. Series 1899-1900-1911. Jlu 1899-June 1911 [microform]. Photoduplication Service. University of the Philippines Library.
Citace podle Chicago (17th ed.)U. S. Bureau of Insular Affairs. Summary of Commerce of the Philippine Islands. Series 1899-1900-1911. Jlu 1899-June 1911 [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
Citace podle MLA (9th ed.)U. S. Bureau of Insular Affairs. Summary of Commerce of the Philippine Islands. Series 1899-1900-1911. Jlu 1899-June 1911 [microform]. Photoduplication Service. University of the Philippines Library, 1977.
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