SELECT C.CitationID As C_ID, S.Name AS Source, P.PersonID AS RIN, C.OwnerType AS C_Type
FROM CitationTable AS C
        LEFT JOIN
     SourceTable AS S ON S.SourceID = C.SourceID
        LEFT JOIN
     PersonTable AS P ON P.PersonID = C.OwnerID 
WHERE C.OwnerType = 0 -- AND P.PersonID IS NULL         
ORDER BY S.Name;