If you're looking specifically for books and ebooks, your best bet is to use the Saint Louis University Libraries' Catalog.
Look for books published by university presses and scholarly associations, written by authors with degrees and credentials in the field. Scholarly or academic books will also cite their sources and will have a lengthy list of references.
Learn how to find books on a topic using the SLU Libraries Catalog by watching this short video.
Search for scholarly (aka peer reviewed) journal articles and scholarly books using SLUth Search Plus. It searches more than 100 library databases, including many that are relevant to this class (JSTOR, Project Muse, Bibliography of Asian Studies, ATLA Religion Database, Philosopher's Index, and the SLU Libraries Catalog).
Learn how to use SLUth Search Plus by watching this short video.