United States. Internal Revenue Service. Tax calendars for .. Dept. of the Treasury, Internal Revenue Service.
Chicago Style (17th ed.) CitationUnited States. Internal Revenue Service. Tax Calendars for .. [Washington, D.C.?]: Dept. of the Treasury, Internal Revenue Service.
MLA (9th ed.) CitationUnited States. Internal Revenue Service. Tax Calendars for .. Dept. of the Treasury, Internal Revenue Service.
Warning: These citations may not always be 100% accurate.