The Power of Critical Thinking - Additional Online Resources - https://web.archive.org/web/20141110203508/http://www.oupcanada.com/higher_education/companion/philosophy/9780195425031/student_resources/additional_resources.html
- Critical Thinking On The Web https://web.archive.org/web/20080721202400/http://www2.austhink.com/critical/
- Experts and Expertise https://web.archive.org/web/20071006010534/http://www.austhink.org/critical/pages/experts_and_expertise.htm
- Group Thinking https://web.archive.org/web/20080115124217/http://www.austhink.org/critical/pages/group_thinking.html
- Argument Mapping https://web.archive.org/web/20080501111834/http://www.austhink.org/critical/pages/argument_mapping.html
- Research Methods Knowledge Base https://conjointly.com/kb/table-of-contents/
- Argument Mapping Tutorials https://web.archive.org/web/20110214001125/http://austhink.com/reason/tutorials/
- Informal Fallacies https://web.archive.org/web/20140217113147/http://www.drury.edu:80/ess/Logic/Informal/Overview.html
- Basic Terms of Logic https://web.archive.org/web/20120805014809/http://www.earlham.edu/~peters/courses/log/terms1.htm
- The Logic Course. https://web.archive.org/web/20041210132443/http://www.thelogiccourse.com/bluestorm/
- Symbolizing, Truth Tables and Validity https://web.archive.org/web/20120130051737/http://www.thelogiccourse.com:80/bluestorm/T6menu.html
- Categorical Logic https://web.archive.org/web/20120130051748/http://www.thelogiccourse.com:80/bluestorm/T8menu.html
- Hypotheses https://web.archive.org/web/20120130051711/http://www.thelogiccourse.com:80/bluestorm/T13menu.html
- Propositional Logic https://iep.utm.edu/propositional-logic-sentential-logic/
- Introduction to Philosophical Thought https://web.archive.org/web/20050320043159/http://flash.lakeheadu.ca:80/~dalarivi/
- A Mini Guide to Critical Thinking https://web.archive.org/web/20090206100539/http://philosophy.hku.hk/think/misc/miniguide.pdf
- Mission: Critical https://web.archive.org/web/19970221064719/http://www.sjsu.edu/depts/itl/graphics/main.html
- Introduction to Causal Arguments https://web.archive.org/web/20121107041313/http://www.sjsu.edu:80/depts/itl/graphics/induc/causal.html
- Argumentation and Critical Thinking tutorial https://web.archive.org/web/20100325112833/http://www.humboldt.edu:80/~act/HTML/tests.html
- Jeff McLaughlin https://web.archive.org/web/20060708192023/http://www.tru.ca/ae/php/phil/mclaughl/
- Jeff's Critical Thinking Page http://www.tru.ca/ae/php/phil/mclaughl/courses/crit/lectures.htm
- A Field Guide to Critical Thinking https://skepticalinquirer.org/1990/01/a-field-guide-to-critical-thinking/
- Analyzing and Assessing Thinking https://web.archive.org/web/20100420044800/http://criticalthinking.org/courses/Elements_standards_model.cfm
- LogicTutor https://web.archive.org/web/20080212054549/http://www.wwnorton.com/college/phil/logic3/
- LEMUR - Learning Evaluation Makes Understanding Real https://web.archive.org/web/20010613120448/http://www.wwnorton.com/lemur/