11. if you are seeking original research, current and developing trends, and experts within a specific field you should consult a. television and video recordings. b. subject-specific encyclopedia. c. encyclopedia such as world book encyclopedia, encyclopedia. com or encyclopaedia britannica. d. periodical/trade journals.

In layman’s, periodical is any publication that comes out occasionally, i.e. periodically and is used at a regular. These journals are often the best sources for research especially if your research requires recent information, information on a specific topic, or information on local news. Periodicals that are peer or scholarly reviewed all have articles reviewed by experts in the subject.

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