- IRS Publication 515 -Withholding of Tax on Nonresident Aliens and Foreign Corporations.
- IRS Publication 519 - U.S. Tax Guide for Aliens
- IRS Publication 597- Information on the United States - Canada Income Tax Treaty
- IRS Publication 901-U.S. Tax Treaties.
- Nonresident Alien Tax compliance: A Guide for Institutions Making Payments to Foreign Students, Scholars, Employees, and Other International Visitors