Internal Sources of secondary data – within the firm’s own records:
Sales department records, price data, customer records, sales reports, etc.
Finance, Customer service department.
External Sources of Secondary Data:
Government Statistics: a detailed source of general information
Newspapers: useful articles
Trade Association: information about business in the industry
Market Research Agencies: specialist agencies researching on the company’s behalf; the commission is paid.
Internet: easily accessible source. Paper-based sources can also be found.