As to symbolic details of the parable, see God’s Kingdom of a Thousand Years Has Approached, pages 169 - 211, published by the Watchtower Bible and Tract Society of New York, Inc.
इस पुस्तक को वॉचटावर बाइबल एण्ड ट्रैक्ट सोसाइटी ने प्रकाशित किया है ।