1.
Domone PLJ, Illston JM. Construction Materials: Their Nature and Behaviour. 4th ed. Spon Press; 2010. http://encore.lib.warwick.ac.uk/iii/encore/record/C__Rb3059306
2.
Megson THG. Structural and Stress Analysis. Third edition. Butterworth-Heinemann is an imprint of Elsevier; 2014. http://encore.lib.warwick.ac.uk/iii/encore/record/C__Rb2821754