Ladislav Sutnar. Prazská dramaturgie / K. H. Hilar. Sfinx, 1930

“The Czech typography of the late 1920's and the 1930's was greatly influenced by Russian Constructivism. The characteristic diagonal, the abstract art language and the yellow-black-red color scheme appeared also in Sutnar's work. A typical feature of his 1930's graphics was a dynamic diagonal composition expanding into space.”

Iva Janáková (ed.). Ladislav Sutnar, Prague-New York: design in action. Prague: Museum of Decorative Arts, 2003 (p. 68)