Start Here: Gale: Literature
From the Advanced Search click on Browse Topics
Browse Topics: On the left side are a variety of topics. Click on one to explore that topic in more detail
Search for a specific theme: Cannot find your theme by browsing the topics? Try searching for the specific theme. For example, the specific theme of the American Dream in Literature is under the broader topic Poverty & Wealth
Start Here: Bloom's Literature
In Bloom’s Literature, click Browse and then click on Literary Themes
From here, you can either browse by theme in alphabetical order
Or, select a theme and then click Apply to see the results
From within an entry, you can click on Share to get the permalink. Also, the Citation option to get the automatically-generated citation (make sure to check this for accuracy). On the right, under Record Information, is where that source comes from and when it was published.
Lastly, you can click on a Tags to further refine your search or find related results.
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Start Here: Literary Reference Center Plus
Literary Reference Center is a database that provides articles. In this database, it is helpful to search for the specific theme and any synonyms and combine them with OR. For example, if I want to look at how Emily Dickinson wrote about death or dying, I would try this search: dickinson, emily AND (death OR dying)
After I search, under Refine Results, I might also limit by Source Types (e.g. literary criticism) or maybe Subject.