maybe you want to have a look at the following articles:
Berthon, Pierre R., et al. "Marketing meets Web 2.0, social media, and creative consumers: Implications for international marketing strategy." Business horizons55.3 (2012): 261-271.
Kumar, V., et al. "Practice prize winner—creating a measurable social media marketing strategy: increasing the value and ROI of intangibles and tangibles for hokey pokey." Marketing Science 32.2 (2013): 194-212.
Michaelidou, Nina, Nikoletta Theofania Siamagka, and George Christodoulides. "Usage, barriers and measurement of social media marketing: An exploratory investigation of small and medium B2B brands." Industrial marketing management 40.7 (2011): 1153-1159.
Nakara, Walid A., Fatim-Zohra Benmoussa, and Annabelle Jaouen. "Entrepreneurship and social media marketing: evidence from French small business." International Journal of Entrepreneurship and Small Business 16.4 (2012): 386-405.
A successful Social Media Marketing Strategy means having a well thought out plan that guides you in everything from attracting users to engaging fans and followers to organizing and researching, with the ultimate goal of converting your followers into paying customers. On top of that, it’s necessary to stay on top of the constant changes that accompany the nature of social media and adapt your strategy accordingly.