Stedmans Medical Dictionary for example, is specific to the medical field. Encyclopedias provide overview articles written by experts in their field. Articles are signed by the author and a bibliography is often included. Encyclopedias include general ones like World Book, Americana, Britannica etc. Magazines, newspapers, newsletters current information, not peer reviewed, not scholarly, yet extremely influential in the world at large.
Monographs are single- subject scholarly works that are detailed, focused and narrow in scope.
They originated in the natural sciences, but are now most useful for humanities scholars. Online Databases are an evolving resource. Information in these databases can range from tables of contents of journals to indexes to information in journals sometimes coupled with the full text of articles to electronic versions of entire journals. Other databases might provide directories of organizations, or all books in print, etc. People include experts and thought leaders in a field, teachers, friends, classmates, reference librarians, etc.