The editors put in that reference, the essay was available before the book was published.
Maybe the following edit?
"Thirteen years ago, Eric Raymond's essay and subsequent book The Cathedral and the Bazaar (O'Reilly Media, 2001)..."
P.S. Done reading now. Enjoyed/appreciated your essay. Amongst other things, perhaps useful for the younger / newer to the technology generation to appreciate where this "configure soup" comes from.