Book  (Aug 2002)  Page(s) 48.  
 
Humdinger
Rated 6.4

Book  (2001)  Page(s) 50.  
 
Humdinger Miniature, orange pink, 1976. Rating: 6.4

Book  (Apr 1993)  Page(s) 253.  
 
Humdinger Miniature, orange-red, 1976, 'Gold Coin' seedling x Miniature seedling; Schwartz, E.W. Description.