Reference resources are a great place to begin your research. They can help you define terms as well as to find basic information about a topic, a chronicle of its history, theories, key people and sometimes a bibliography of additional sources.
There are many different types of reference sources, which include dictionaries, encyclopedias, thesauri, bibliographies, handbooks, style manuals to name a few.
Cambridge History of Latin America (via Cambridge Histories Online)
F1410 .C1834 1984 (SL Reserve)
Cambridge Encyclopedia of Latin America and the Caribbean
Encyclopedia of Cuba: People, History, Culture
REF F1754 .E53 2003
Encyclopedia of Historians and Historical Writing
REF D14.E53 1999
Encyclopedia of Latin American History and Culture
REF F1406 .E53 1996
Latin American Historical Dictionaries (for list, search title as a Series title)
Oxford History of Mexico
F1226 .O94 2000