Richmond, P. A. (1965). Aspects of recent research in the art and science of classification. Danish Centre for Documentation.
Lua i Stíl Chicago (17ú heag.)Richmond, Phyllis A. Aspects of Recent Research in the Art and Science of Classification. Copenhagen: Danish Centre for Documentation, 1965.
Lua MLA (8ú heag.)Richmond, Phyllis A. Aspects of Recent Research in the Art and Science of Classification. Danish Centre for Documentation, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.