"Cat. No. 49952H." and Description based on: Rev. Nov. 2000; title from title screen (viewed on May 26, 2004).
Online version of the print publication.
Mode of access: Internet at the IRS web site. Address of latest issue as of 5/26/04: http://www.irs.gov/pub/irs-fill/f637.pdf; current access is available via PURL.
Available also on CD-ROM: United States. Internal Revenue Service. Tax products CD-ROM. and Some forms and instructions also available in: United States. Internal Revenue Service. Reproducible copies of federal tax forms and instructions.