- Michael E. Atwood, editor, CHI '99 Extended Abstracts on Human Factors in Computing Systems, CHI Extended Abstracts '99, Pittsburgh, Pennsylvania, USA, May 15-20, 1999. ACM, 1999.
- Marian G. Williams, Mark W. Altom, editors, Proceeding of the CHI '99 Conference on Human Factors in Computing Systems: The CHI is the Limit, Pittsburgh, PA, USA, May 15-20, 1999. ACM, 1999.