Piper, D., & Murphey, C. (2007). Heaven is real: Lessons on earthly joy-- from the man who spent 90 minutes in heaven. Berkley Praise.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPiper, Don, और Cecil Murphey. Heaven Is Real: Lessons on Earthly Joy-- from the Man Who Spent 90 Minutes in Heaven. New York: Berkley Praise, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPiper, Don, और Cecil Murphey. Heaven Is Real: Lessons on Earthly Joy-- from the Man Who Spent 90 Minutes in Heaven. Berkley Praise, 2007.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.