Boyce, W.E. and DiPrima, R.C. (2013) Elementary differential equations and boundary value problems. Tenth edition, International student version. [Hoboken, N.J.]: Wiley.
Jeffrey, A. (1992) Essentials of engineering mathematics: worked examples and problems. London: Chapman & Hall.
Salas, S.L., Hille, E. and Etgen, G.J. (no date) Calculus: one and several variables. Tenth edition. Hoboken, N.J.: John Wiley & Sons.
Weir, M.D., Hass, J. and Thomas, G.B. (2010) Thomas’ calculus. 12th ed., Global ed. Boston, Mass: Pearson Education.