Szarkowski, J. (1956). The idea of Louis Sullivan. University of Minnesota Press.
Lua i Stíl Chicago (17ú heag.)Szarkowski, John. The Idea of Louis Sullivan. Minneapolis: University of Minnesota Press, 1956.
Lua MLA (9ú heag.)Szarkowski, John. The Idea of Louis Sullivan. University of Minnesota Press, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.