Hayes, R. J. (1950). American libraries.
Lua i Stíl Chicago (17ú heag.)Hayes, R. J. American Libraries. 1950.
Lua MLA (9ú heag.)Hayes, R. J. American Libraries. 1950.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)
