The Modern Language Association International Bibliography (MLAIB) database is a powerful tool that allows researchers to search for English Literature- related peer-reviewed articles, essays that appear in books as chapters, and the books themselves that collect these essay chapters. The MLAIB database can be easily accessed by clicking on Article Indexes and Databases on the e-Library home page, and then selecting "M" from the horizontal alphabetic menu. Or, you can get to it by clicking here.
There is a database that the ISU e-Library subscribes to called Literature Criticism Online. Currently, it's recommended that users perform their search by using the "Discover New Ideas" search box towards the upper middle of the screen rather than engaging with one of the three options below. This database gives full-text article access to everything in, but not limited to, the following Gale print reference book series:
You can do a search on the title or author of a literary work and retrieve a list of citations with links to full-text, as well as a way to limit search results by using the left-hand menu.
There is a database that the ISU e-Library subscribes to called Literature Resource Center. This database gives full-text article access to everything in, but not limited to, the following Gale print reference book series:
The basic and advanced searches allow users to search by specific title of a literary work, author of a literary work, or theme/subject matter. Results are divided into tabbed sections with headings such as "Criticism," "Biography," "Topics and Overviews," "Reviews," and "Primary Sources."
JSTOR is an excellent resource for finding articles published in archival and recent issues in scholarly journals. In 2015, JSTOR will be adding the contents of current issues of journals as well. Some electronic books are also available. JSTOR and MLA have a giant overlap, but there is much miore full-text material available via the former (click here for JSTOR).
Academic Search Premier is a very useful tool for finding scholarly articles on any academic topic, including anything that falls under the umbrella of English studies. Many of the articles you'll find here are available in full-text format (i.e. the article appears right on the screen). This doesn't go anywhere nearly as in depth as the MLA Database does, so it's a good idea to try both of these tools, regardless of which aspect of English you're studying.