What is an artist book?
Artists' books take every possible form, participate in every possible convention of book making, every possible "ism" of mainstream art and literature, every possible mode of production, every shape, every degree of ephemerality or archival durability.
There are no specific criteria for defining what an artist's book is, but there are many criteria for defining what it is not, or what it partakes of, or what it distinguishes itself from...
Artists' books are a unique genre, ultimately a genre which is as much about itself, its own forms and traditions, as any other art form or activity. But it is a genre as little bound by constraints of medium or form...It's an area which needs description, investigation, and critical attention before its specificity will emerge.
From The Artist's Book as Idea and Form by Johanna Drucker