Argument sources are those with which you engage their argument. These are usually scholarly sources, because scholarly sources tend to make academic arguments. You may need to refine, extend, or refute a source's argument.
Law, News and Business Database.
Full text news articles, law journal articles, court cases, briefs, legal codes, and SEC filings. Users can Shepardize court cases and then read the full text of the related decisions. Most publications are covered 1980-present. The best place to find interview transcripts from television and radio.