Bibliografía
Chaffey, D, Ellis-Chadwick, F, Johnston, K and Mayer, R. (2012). Digital Marketing Strategy, implementation and practice. United Kingdom: Pearson Education Limited
Parkin, G. (2009). Digital Marketing Strategies for Online Success. United Kingdom: New Holland Publishers Ltd.
Rayan, D., and Jones, C. (2012). Understanding Digital Marketing. United Kingdom: Kogan Page Llt.