Gertrude Elion https://www.famousscientists.org/gertrude-b-elion/
Gertrude Belle Elionová: Citáty v angličtine
Gertrude Elion https://www.famousscientists.org/gertrude-b-elion/
Gertrude B. Elion, Quotes at goodreads.com https://www.goodreads.com/author/quotes/7793243.Gertrude_B_Elion