Check out these links about logical fallacies:
http://mrgunnar.net/ap.cfm?subpage=348991
http://www.fallacydetective.com/articles/read/short-list-of-fallacies
http://www.fallacydetective.com/articles/read/short-list-of-fallacies
http://mrgunnar.net/ap.cfm?subpage=348991
http://writing.colostate.edu/guides/guide.cfm?guideid=58
http://www-rohan.sdsu.edu/~digger/305/toulmin_model.htm
https://owl.english.purdue.edu/owl/resource/588/03/
http://grammar.about.com/od/tz/g/Toulminmodelterm.htm
http://en.wikipedia.org/wiki/Stephen_Toulmin
http://tipsforresearchpapersandessays.blogspot.com/2008/06/how-to-write-rogerian-argument.html
http://www.brighthubeducation.com/help-with-writing/104393-rogerian-argument-essay-structure/
http://www.brighthubeducation.com/help-with-writing/106553-forming-the-outline-of-a-rogerian-argument-essay/
http://writingcommons.org/open-text/genres/academic-writing/arguments/318-rogerian-argument
http://ocw.usu.edu/English/introduction-to-writing-academic-prose/rogerian-argument.html
http://en.wikipedia.org/wiki/Carl_Rogers
https://owl.english.purdue.edu/owl/resource/659/03/
http://www.mrgunnar.net/ap.cfm?subpage=348991
http://writing.colostate.edu/guides/guide.cfm?guideid=58
http://ccat.sas.upenn.edu/~haroldfs/popcult/handouts/arguments/arguments.html
http://www.brighthubeducation.com/help-with-writing/104393-rogerian-argument-essay-structure/
http://home.comcast.net/~lukeythetruck/djole/SchoolPage/SPSCC/English%20102/3ArgumentTypes.htm
http://writing.colostate.edu/guides/guide.cfm?guideid=58
http://www-rohan.sdsu.edu/~digger/305/toulmin_model.htm
https://owl.english.purdue.edu/owl/resource/588/03/
http://grammar.about.com/od/tz/g/Toulminmodelterm.htm
http://en.wikipedia.org/wiki/Stephen_Toulmin
http://tipsforresearchpapersandessays.blogspot.com/2008/06/how-to-write-rogerian-argument.html
http://www.brighthubeducation.com/help-with-writing/104393-rogerian-argument-essay-structure/
http://www.brighthubeducation.com/help-with-writing/106553-forming-the-outline-of-a-rogerian-argument-essay/
http://writingcommons.org/open-text/genres/academic-writing/arguments/318-rogerian-argument
http://ocw.usu.edu/English/introduction-to-writing-academic-prose/rogerian-argument.html
http://en.wikipedia.org/wiki/Carl_Rogers
https://owl.english.purdue.edu/owl/resource/659/03/
http://www.mrgunnar.net/ap.cfm?subpage=348991
http://writing.colostate.edu/guides/guide.cfm?guideid=58
http://ccat.sas.upenn.edu/~haroldfs/popcult/handouts/arguments/arguments.html
http://www.brighthubeducation.com/help-with-writing/104393-rogerian-argument-essay-structure/
http://home.comcast.net/~lukeythetruck/djole/SchoolPage/SPSCC/English%20102/3ArgumentTypes.htm