These are PRINT reference books that can be be found on the 2nd floor of Cohen Library to the left of the giant globe:
Encyclopedia of Allegorical Literature by David Adams Leeming Masterpieces of World Literature by Frank Magill Feminist Writings from Ancient Times to the Modern World: A Global Sourcebook and History by Tiffany K. Wayne
There are several reference resources online. Databases like Oxford Reference will search your subject term and then offer entries from different books.