Book  (Sep 1993)  Page(s) 154.  Includes photo(s).
 
Duftbella Cluster-flowered. Description... The name 'Duftbella' seems to be a combination of German and Italian for 'Fragrant' and 'beautiful'... Karl Herzel (Germany) 1973. Parentage: 'Fragrant Cloud' x ('Monique' x 'Mardi Gras')

Book  (Apr 1993)  Page(s) 147.  
 
Duftbella® Floribunda, dark velvet red, 1973, 'Fragrant Cloud' x ('Monique' x 'Mardi Gras'); Hetzel [sic]. Description.