# Federal Register
1 - 1989.107, 1989.107(a), 1989.107(b), 1989.107(c), 1989.107(d) - 87:12575-12588 - Procedures for the Handling of Retaliation Complaints Under the Taxpayer First Act (TFA) - PDF
# Regulations
1 - 1989.107 - Hearings.