Chicago: U.S. Supreme Court, "Syllabus," Helvering v. American Chicle Co., 291 U.S. 426 (1934) in 291 U.S. 426 291 U.S. 427–291 U.S. 428. Original Sources, accessed May 6, 2025, http://www.originalsources.com/Document.aspx?DocID=73JXNK88SSIYTGB.
MLA: U.S. Supreme Court. "Syllabus." Helvering v. American Chicle Co., 291 U.S. 426 (1934), in 291 U.S. 426, pp. 291 U.S. 427–291 U.S. 428. Original Sources. 6 May. 2025. http://www.originalsources.com/Document.aspx?DocID=73JXNK88SSIYTGB.
Harvard: U.S. Supreme Court, 'Syllabus' in Helvering v. American Chicle Co., 291 U.S. 426 (1934). cited in 1934, 291 U.S. 426, pp.291 U.S. 427–291 U.S. 428. Original Sources, retrieved 6 May 2025, from http://www.originalsources.com/Document.aspx?DocID=73JXNK88SSIYTGB.