Reference books (encyclopedias, handbooks, chronologies) are valuable sources of information.
Selected Encyclopedias, Dictionaries, and Handbooks
Cambridge Histories Online Under Databases on library website
Complete text of over 350 scholarly texts in the Cambridge History Series. Each title is also listed individually in the library's online catalog. Dates vary. Some titles are available in print.
Modern Genocide: The Definitive Resource Ref HV 6322.7 M63 2015
and Document Collection
Encyclopedia of Genocide and Crimes e-book in library catalog