Primary sources are documents, reports, recordings, or other sources of information that are created most probably through__________ and_________ .
举一反三
- Indexes are _______. A: primary sources B: secondary sources C: tertiary sources
- Papers in a journal are ______. A: primary sources B: secondary sources C: tertiary sources
- What are the main sources of marketing research information？: higher research|primary research|secondary research|thirdly research
- The information collected from sources like ( ) and other market players can be called marketing information.
- What are the primary sources of British law?