Columbia subject headings:
Electronic commerce--Taxation--Law and legislation--United States.
Internet marketing--Taxation--United States.
Local taxation--Law and legislation--United States.
Taxation, State--Law and legislation--United States.
Harvard subject headings:
Electronic commerce--Taxation--Law and legislation--United States.
Internet marketing--Taxation--United States.
Local taxation--Law and legislation--United States.
Taxation, State--Law and legislation--United States.
Taxation, State--Law and legislation.
Princeton subject headings:
Electronic commerce--Taxation--Law and legislation--United States.
Internet marketing--Taxation--United States.
Local taxation--Law and legislation--United States.
Taxation, State--Law and legislation--United States.