In-text: Bevan (n.d.) stated that staff morale is much higher when….. Or, if used at the end of the sentence: Staff morale is much higher when …..(Bevan, n.d.).
Reference list: Bevan, M.R. (n.d.). “The impact of a coffee machine on staff morale”. Available from: <http://www.coffeebeans.com>. [Accessed on 6 June 2015].