You can always start your article search in Hope Primo, as this covers a wide range of our article holdings, particularly digital. These results will be broad and sometimes messy, so consider narrowing down using "Tweak your results."
For subject-specific databases, if you are not having luck in IBTD or MLA Bibliography, here are a couple of other places to try. Those of you with Greek plays may want to consider this, as MLA Bibliography is not quite as strong in this area.
International Bibliography of Theatre and Dance and MLA Bibliography are two tools for locating scholarly material on plays, In them, you will find citations for scholarly journal articles, books, book chapters, and dissertations. International Bibliography also has a lot of popular press materials, particularly focused on production reviews.
Tips for Searching