This 15 volume set is an extremely comprehensive encyclopedia of the ancient world. Not every entry provides a bibliography and the ones that do tend to list older, canonical works of scholarship. There is also an additional 5 volume set devoted to reception of the ancient world in more modern times.
The Oxford Encyclopedia of ancient Greece and Rome
This dictionary of the classical world has articles ranging from a single paragraph to several pages long, making a great place to go for a quick overview of a topic. Like the New Pauly, the entries in the bibliographies tend to be for older, standard resources on the topic.