Journal articles and other periodical publications provide scholarly information on specific aspects of history and the history of science. 1) Because scholarly articles are peer reviewed, they are more authoritative than magazine articles.
2) Since articles are published on a shorter schedule than books, they can be more-up-to-date.
The following indexes are the best ways for you to identify journal articles:
There are also indexes devoted to literary history, economics and art history that may be of use for specific topics:
Watch for these authoritative journal titles when you are searching indexes and scanning footnotes. You can also browse the latest issues online or in paper because it takes some time for indexes to add newly published articles: