http://www.helium.com/knowledge/248093-how-to-choose-the-right-copyediting-and-proofreading-books.xml Helium.com > Business of Writing (Other) > How to choose the right copyediting and proofreading books en-us Copyright Helium.com Wed, 24 Jun 2009 03:53:27 GMT Wed, 24 Jun 2009 03:53:27 GMT