After estabilishing the basic type of research to be conducted, the source, or source, of the data to be collected must be determined. Marketing research data can be obtained from secondary, syndicated, and primary data source. Secondary data are data have already been gathered for some other purpose but that also provide useful information for the current problem (Crack Melvin, et al. 1995)
One of the qualitative research methods for macro analysis with a relatively minimal budget. Sigma Research has qualitative research specialists who have competencies in content analysis and researchers in specialized investigative fields. Sources of data from the mass media, BPS, BI, journals, corporate financial statements, survey results, and other related literature.