In-text: …. Simpson, Thomas and Enslin (2014) explained that mobile technology…. or at the end of the sentence, for example... Mobile technology has …. (Simpson, Thomas & Enslin, 2014).
Reference list: Simpson, J.A., Thomas, S.A. and Enslin, D.J. (2014) “The role of mobile technology in the media plan”, Journal of International Marketing, vol.17, no. 2, pp. 63-65.