The books to the right are examples of the many secondary sources available to you through the West Library on Ancient Greece and Rome. They can be used to gain new ideas, perspectives on a topic, plus to find new sources on a topic.
Below are four ways to obtain books.
The Course of Mexican History by 
The Oxford History of Mexico by 
A Companion to Mexican History and Culture by 
History of the conquest of Mexico, with a preliminary view of the ancient Mexican civilization, and the life of the conqueror, Hernando Cortes. by 
The Works of Hubert Howe Bancroft (Bancroft's Works) by 
The Life and Times of Mexico by