Statistics of income, preliminary.
Corporation income tax returns.

APA Citation

United States. Internal Revenue Service. (1981). Statistics of income, preliminary. Washington, D.C.: Dept. of the Treasury, Internal Revenue Service .

MLA Citation

United States. Internal Revenue Service. Statistics of Income, Preliminary. Washington, D.C.: Dept. of the Treasury, Internal Revenue Service , 1981.

Warning: These citations may not always be complete (especially for serials).