The Calvin Institute of Christian Worship has a great resource library, with interviews, articles, presentations, and more - look here for resources specifically on diversity and multicultural worship

Click here to go directly to search results in the Library of Congress for Spirituals and Gospel music in their audio recordings collection

Proskuneo is an organization that supports multicultural worship, and their Youtube channel includes lots of videos of songs in different languages and worship traditions, to inspire your worship planning and add to your research