Chicago: U.S. Supreme Court, "Syllabus," Helvering v. Oregon Mut. Life Ins. Co., 311 U.S. 267 (1940) in 311 U.S. 267 Original Sources, accessed May 7, 2025, http://www.originalsources.com/Document.aspx?DocID=2TBXHU3T24QFQQN.
MLA: U.S. Supreme Court. "Syllabus." Helvering v. Oregon Mut. Life Ins. Co., 311 U.S. 267 (1940), in 311 U.S. 267, Original Sources. 7 May. 2025. http://www.originalsources.com/Document.aspx?DocID=2TBXHU3T24QFQQN.
Harvard: U.S. Supreme Court, 'Syllabus' in Helvering v. Oregon Mut. Life Ins. Co., 311 U.S. 267 (1940). cited in 1940, 311 U.S. 267. Original Sources, retrieved 7 May 2025, from http://www.originalsources.com/Document.aspx?DocID=2TBXHU3T24QFQQN.