APA (7th ed.) Citation

United States. Internal Revenue Service. (1998). Reproducible copies of federal tax forms and instructions (Abridged ed.). Dept. of the Treasury, Internal Revenue Service.

Chicago Style (17th ed.) Citation

United States. Internal Revenue Service. Reproducible Copies of Federal Tax Forms and Instructions. Abridged ed. [Washington, D.C.?]: Dept. of the Treasury, Internal Revenue Service, 1998.

MLA (9th ed.) Citation

United States. Internal Revenue Service. Reproducible Copies of Federal Tax Forms and Instructions. Abridged ed. Dept. of the Treasury, Internal Revenue Service, 1998.