Columbia subject headings:
Income tax--United States.
Service industries workers--Taxation--United States.
Tax administration and procedure--United States.
Tipping--Taxation--United States.
Harvard subject headings:
Income tax--United States.
Service industries workers--Taxation--United States.
Tax administration and procedure--United States.
Tipping--Taxation--United States.
Princeton subject headings:
Income tax--United States.
Service industries workers--Taxation--United States.
Tax administration and procedure--United States.
Tipping--Taxation--United States.