Lilly, W. E. The design of arches. Illustr.
Lua i Stíl Chicago (17ú heag.)Lilly, W. E. The Design of Arches. Illustr.
Lua MLA (9ú heag.)Lilly, W. E. The Design of Arches. Illustr.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
