Columbia subject headings:
Income tax--United States--Foreign income.
International business enterprises--Taxation--United States.
Harvard subject headings:
Corporations, Foreign--Taxation--United States
Corporations, Foreign--Taxation--United States--States.
Income tax--United States--States--Foreign income.
International business enterprises--Taxation--Law and legislation--United States--States.
International business enterprises--Taxation--United States--States.
Tax administration and procedure--United States.
Unitary taxation.
Princeton subject headings:
Corporations, Foreign--Taxation--United States--States.
Income tax--United States--States--Foreign income.
International business enterprises--Taxation--Law and legislation--United States--States.
Unitary taxation.