Periodicals are so called because they are published at regular intervals - or periodically. They may be published daily, weekly, monthly, quarterly, or at any other interval. Most of your periodical research will come from four main categories.
|Magazines||Contain articles about topics of popular or current interest
Geared toward the general public
Usually written by journalists, not experts
Sometimes serious topics are covered and analyzed
|Scholarly Journals||Contain detailed articles focusing on a particular profession or academic area
Articles written by scholars or experts in that field
May cover very specific aspects of a topic
Often report on studies and research.
May be peer reviewed before being selected for publication
|Trade Publications||Articles directed at people in a certain field or industry
Written by other people in that field or industry
Contain industry information, trends, statistics, etc.
|Newspapers||Articles cover current events
More up to date than journals or books
Usually published daily
Good source for local information