Website/Catalog  (2012)  
 
Website

April Moon, S, my, 1985, [Serendipity × (Tickled Pink × Maytime)], Buck, Dr. Griffith J.; bud small; flowers lemon yellow, 28 petals, cupped, borne 5-10 per cluster, moderate, sweet fragrance; repeat bloom; foliage dark, leathery; prickles awl-like, tan; erect, short, bushy growth; hardy

Article (magazine)  (2010)  Page(s) 1781.  
 
April Moon, Earth-Kind Brigade, Shrub, 1984, Griffith Buck, Ploidy 3x..

Article (misc)  (Jul 2002)  Page(s) 7.  
 
April Moon
Shrub
[my]

Book  (2002)  Page(s) 22.  
 
Not rated

Book  (Apr 1993)  Page(s) 26.  
 
April Moon Shrub, medium yellow, 'Serendipity' x ('Tickled Pink' x 'Maytime'); Buck, Dr. G.J. Description.

Book  (1990)  Page(s) 116.  Includes photo(s).
 
April Moon Buck 1982. Description... Long, yellow buds open to large, 12 cm, quite double flowers of white with lemon at the base...