Bryan Bishop travels all around the world as a researcher for Youth With a Mission, and in his book Boundless: What Global Expressions of Faith Teach Us About Following Jesus, he discusses some of these travels. Boundless is a very valuable book, demonstrating how people can spread the love of Jesus and evangelize to other cultures while still respecting and retaining those cultures.
This book taught me a lot, and I was able to learn new things about various religions. Bishop is a good writer, and he describes people in a way that brings life to the pages. If you are planning on ministering to people from other cultures, Boundless is a great book to read! The appendix even includes a detailed outline for a 10-session Boundless Jesus Bible Study.
I received a review copy from Baker Books. Boundless is available here on Amazon.