سایت های مفید جهت یادگیری و تصحیح Writing

https://owl.english.purdue.edu/ https://www.grammarly.com/l https://www.powa.org/ http://www.economist.com/styleguide/introduction http://grammar.ccc.commnet.edu/grammar/index.htm https://www.nounplus.net/ http://www.paperrater.com/ https://leo.stcloudstate.edu/index.html https://www.gramlee.com/ https://virtualwritingtutor.com/ http://proofreadbot.com/ http://www.grammarbase.com/ http://www.polishmywriting.com/ http://www.whitesmoke.com/ http://arts.uottawa.ca/writingcentre/en/hypergrammar http://www.bartleby.com/141/ https://brians.wsu.edu/common-errors/