|amazonukcover=<amazonuk>0340963034</amazonuk> |amazonusaznuk=<amazonus>0670019631</amazonus> 0340963034|sortaznus=Shades of Grey0670019631
}}
Further reading suggestion: If you like this you're probably already a [[:Category:Terry Pratchett|Terry Pratchett]] fan, but if not why not start with the [[The Amazing Maurice and His Educated Rodents by Terry Pratchett|Amazing Maurice...]]