Field, Andy. Discovering Statistics Using IBM SPSS Statistics: (And Sex and Drugs and Rock ‘n’ Roll). 4th ed, Sage, 2013.
Howell, David C. Fundamental Statistics for the Behavioral Sciences. 7th ed, Wadsworth Cengage Learning, 2011.
J. Baron. ‘Decisions about the Future’. Thinking and Deciding, 4th ed, Cambridge University Press, 2008, 2008, https://contentstore.cla.co.uk/secure/link?id=89fa79eb-8243-e611-80bd-0cc47a6bddeb.