Lilly, W. E. (1928). On column formulae.
Lua i Stíl Chicago (17ú heag.)Lilly, W. E. On Column Formulae. 1928.
Lua MLA (9ú heag.)Lilly, W. E. On Column Formulae. 1928.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)
