McKillup, Steve. 2006. Statistics Explained: An Introductory Guide for Life Scientists. Illustrated edition. Cambridge, UK: Cambridge University Press. http://ezproxy.library.qmul.ac.uk/login?url=http://www.vlebooks.com/vleweb/product/openreader?id=QMUL&isbn=9780511566950&uid=^u.
———. 2011. Statistics Explained: An Introductory Guide for Life Scientists. Cambridge: Cambridge University Press.