For Literature research, this broad database contains four key eReference series. They are: Short Stories for Students, Novels for Students, Poetry for Students and Drama for Students. Use advanced search to narrow down a poem title search to Poetry for Students.
Literary criticisms from this database are often older and sometimes from the time the work was written. Care must be take that it is not a book review. Make sure to use the advanced search and select Language and Literature journals to perform research.
Take care that this cross disciplinary database find literary criticism when looking for a book, short story, poem or play. Using the word criticism or literary often narrows search results down to appropriate journals.