- American Federation of Information Processing Societies: AFIPS Conference Proceedings: 1971 Spring Joint Computer Conference, Atlantic City, NJ, USA, May 18-20, 1971. Volume 38 of AFIPS Conference Proceedings, AFIPS, 1971.
- American Federation of Information Processing Societies: Proceedings of the AFIPS '71 Fall Joint Computer Conference, November 16-18, 1971, Las Vegas, Nevada, USA. Volume 39 of AFIPS Conference Proceedings, AFIPS / ACM, 1971.