GROPIUS, W. (1968). Apollo In Democracy. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)GROPIUS, Walter. Apollo In Democracy. McGraw-Hill, 1968.
Lua MLA (8ú heag.)GROPIUS, Walter. Apollo In Democracy. McGraw-Hill, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.