Enoch Wan 
Christian Witness in Pluralistic Contexts in the Twenty-First Century [PDF ebook] 

"This volume is not a set of textbook answers on how to witness to Hindus, Buddhists, Muslims, and people with other religions based on simple formulas. It is the wrestlings, affirmations, and testimonies of those who have been deeply involved in ministries to people of other religious faiths and have thought deeply about the issues religious pluralism raises." — Paul G. Hiebert, Professor Emeritus, Trinity Evangelical Divinity School