Lua APA (7ú heag.)
Jespersen, O. (1894). Progress in language.
Lua i Stíl Chicago (17ú heag.)
Jespersen, Otto. Progress in Language. London, 1894.
Lua MLA (9ú heag.)
Jespersen, Otto. Progress in Language. 1894.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.