In secondary data of this research, literature reviews are significant important information for the researcher that has to use information from the literature review. This shows the detailed and data from other people, which related to the research topic, of many previous sources. Next, this information has to re-analyse for first preliminary data of this research. Importantly, secondary data is very convenience for searching the data. On the other hand, this secondary data might not good enough and relate with the research questions. Finally, the researcher has to evaluate this data by considering some information for example the objective of sources, up to date, the authority’s creditability, academic content and interpreting of the data.