Calculus Bible, Doug Graham
Dawkins, Paul. "Pauls Online Notes : Calculus II - Trig Substitutions." Pauls Online Notes : Calculus II - Trig Substitutions. N.p., n.d. Web. 22 Apr. 2015. http://tutorial.math.lamar.edu/problems/calcii/trigsubstitutions.aspx
Cengage Learning Chapter 8: Integration Technique, L'Hopital's Rule, and Improper Integration
Bock, David, and Shirley O. Hockett. Barron's AP Calculus. 12th ed. Hauppauge, NY: Barron's, 2013. Print.
Dawkins, Paul. "Pauls Online Notes : Calculus II - Trig Substitutions." Pauls Online Notes : Calculus II - Trig Substitutions. N.p., n.d. Web. 22 Apr. 2015. http://tutorial.math.lamar.edu/problems/calcii/trigsubstitutions.aspx
Cengage Learning Chapter 8: Integration Technique, L'Hopital's Rule, and Improper Integration
Bock, David, and Shirley O. Hockett. Barron's AP Calculus. 12th ed. Hauppauge, NY: Barron's, 2013. Print.