United States. Department of the Treasury. (1921). Statistics of income from returns of net income for 1921, including statistics from Federal estate tax returns. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of the Treasury. Statistics of Income from Returns of Net Income for 1921, Including Statistics from Federal Estate Tax Returns. [Washington]: GPO, 1921.
MLA (9th ed.) CitationUnited States. Department of the Treasury. Statistics of Income from Returns of Net Income for 1921, Including Statistics from Federal Estate Tax Returns. GPO, 1921.
Warning: These citations may not always be 100% accurate.