1. The Arts Today;Grigson,1935
2. Britannicahttps://www.britannica.com/art/biomorphic-art
3. “Bahai temples”;Rafati,1989
4. Antoni Gaudi–A Life Devoted to Architecture. Trans. from German by Doris Jones and Jeremy Gaines;Zerbst,1988
5. Design 1935–1965: What modern was: Selections from the Liliane and David M;Eidelberg,1991