The importance of social relationship (networking) is well known for small entrepreneurs as the way to meet their different business objectives. However, the different ways of application of networking is not yet defined. In this sense, literature shows the importance of networking, but there is not reviews about the specific fields of applications. In this paper, a review is carried out using concepts from graph theory to identify the different perspectives in which the small business applies networking. The results showed that networking could be applied in four different areas like finance, innovation, marketing and internationalization. The identification of those areas helps to make targeted investigations in order to improve the marketing process in small companies and make them competitive.