Self-Reference: Reflections on Reflexivity, edited by Steven J. Bartlett and Peter Suber, is the first published collection of essays to give a sense of depth and breadth of current work on this fascinating and important set of issues. The volume contains 13 essays by well-known authors in this field, written on special invitation for this collection. In addition, the book includes the first general bibliography of works on self-reference, comprising more than 1,200 citations.
This book is currently out-of-print, but available on the author's web site, which is where I found it.