United States. Bureau of Insular Affairs. (1921). Internal revenue laws of Philippine Islands in force and effect July 1, 1921. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Bureau of Insular Affairs. Internal Revenue Laws of Philippine Islands in Force and Effect July 1, 1921. Washington: U.S. GPO, 1921.
MLA (9th ed.) CitationUnited States. Bureau of Insular Affairs. Internal Revenue Laws of Philippine Islands in Force and Effect July 1, 1921. U.S. GPO, 1921.
Warning: These citations may not always be 100% accurate.