Book  (Apr 1999)  Page(s) 461.  
 
Cécile Ratinckx Pernetiana. Vandevelde 1924... Copper yellow...

Book  (1936)  Page(s) 598.  
 
Ratinckx, Cécile (hybrid lutea) Vandevelde 1924; L.C. Breslau X M.E. Herriot; coppery yellow, large, double, cup form, floriferous, repeats well, growth 6/10.

Book  (1926)  Page(s) 186.  
 
Cécile Ratinckx Hybrid Tea (F. Vandevelde [The Netherlands], 1924)... coppery-yellow.