McKillup, Steve (2006) Statistics explained: an introductory guide for life scientists. illustrated edition. Cambridge, UK: Cambridge University Press. Available at: http://ezproxy.library.qmul.ac.uk/login?url=http://www.vlebooks.com/vleweb/product/openreader?id=QMUL&isbn=9780511566950&uid=^u.
McKillup, Steve (2011) Statistics explained: an Introductory guide for life scientists. Cambridge: Cambridge University Press.