Since the Reference field is housed on the revenue, we can access the contents of this field from the Revenue node in query. 
  1. In the left column, highlight Revenue 
  2. From the middle column, scroll down until you see Reference User-added image
  3. If you want to find records that have certain words in the Reference field, you can drag the Reference field in Include Records Where and use this as a query filter:User-added image
  4. If you want to display the contents of the Reference field, you can also drag the Reference field to Results Fields to Display: User-added image