Burden, R., Faires, D.: Numerical Analysis: Bisection Method, pp. 48–55. Brooks/Cole, Belmont (2015)
Hass, J., Weir, M.D., Thomas, G.B.: University Calculus: The Newton–Raphson Method, pp. 275–277. Pearson, Harlow (2016)
Hass, J., Weir, M.D., Thomas, G.B.: University Calculus: Rolle’s Theorem, pp. 231–232. Pearson, Harlow (2016)
Lockhart, J.: Extension of the Celebrated Theorem of C. Sturm, Whereby the Roots of Numeral Equations May Be Separated from Each Other, with Copious Examples. Leopold Classic Library, Victoria (2017)
Bisection method https://en.wikipedia.org/wiki/Bisection_method
Sturm’s Theorem https://en.wikipedia.org/wiki/Sturm%27s_theorem
Rolle’s Theorem https://en.wikipedia.org/wiki/Rolle%27s_theorem
The Newton–Raphson method https://en.wikipedia.org/wiki/Newton%27s_method