In-text: …. Mobile technology has …. (Simpson, Thomas & Enslin, 2014) or Simpson, Thomas and Enslin (2014) explained that mobile technology….
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.