Johnson, M.D. (2016) Human biology: concepts and current issues 8th edition. [online]. Upper Saddle River, Pearson. Available from: http://www.vlebooks.com/vleweb/product/openreader?id=WofEngland&isbn=9781292166377.
Simon, E.J., Dickey, J., Hogan, K.A., Reece, J.B. and Campbell, N.A. (2016) Campbell essential biology with physiology 5th edition. [online]. Harlow, Essex, England, Pearson. Available from: http://www.vlebooks.com/vleweb/product/openreader?id=WofEngland&isbn=9781292102375.
Starr, C. and McMillan, B. (2014) Human biology Tenth edition, International edition. [online]. Australia, Brooks/Cole Cengage Learning. Available from: http://www.vlebooks.com/vleweb/product/openreader?id=WofEngland&isbn=9781473711266.
Torrance, J. (2013) Higher human biology: Applying knowledge and skills [online]. Paisley, Hodder Gibson. Available from: http://www.vlebooks.com/vleweb/product/openreader?id=WofEngland&isbn=9781444192070.
