Advertising Agencies: Advertising agencies have proved to be very useful sources o f marketing research. Recently a large number of agencies have come onto the findings of the advertising researches for their clients. Advertising agencies sometimes publish reviews resumes and tests of marketing researches. The consumers behaviour consumption pattern and demographic features are generally revealed by these agencies.

Other sources: There are several other sources of marketing researches individual conduct their own researches which may be purchased by other institutions. Marketing association management associations and individual business houses have been conducting marketing researches for other researches. There are a large number of research organization in foreign countries which are selling their research findings to organizations requiring to known the outcome of their researches.