A list of references for workshop critiquing. Most of these taken from the Critters list.

How the Workshop Is Supposed to Work, by Edward Bryant
The Diplomatic Critiquer, by Andrew Burt
It's Not What You Say, But How You Say It, by Andrew Burt
Tiny Word Changes Make All the Difference, by Andrew Burt
How to Critique Fiction, by Victoria Crane
How to Succeed in an Online Writing Workshop, by Victoria Crane
How to Cope with Critiquing, by Rich Hamper
The Turkey City Lexicon, a critiquing lexicon for SF/F
Hardcore Critique Advice, by Amy Sterling Casil
Four Steps for a Useful Critique, by Maureen F. McHugh
Workshop Critiquing, by Cory Doctorow