Hogg, M.A. and Vaughan, G.M. (2018a) Social psychology. Eighth edition. Harlow, England: Pearson. Available at: https://ebookcentral.proquest.com/lib/city/detail.action?docID=5174497.
Hogg, M.A. and Vaughan, G.M. (2018b) Social psychology. Eighth edition. Harlow, England: Pearson.