Needham, K. S. (1964). Synonymy and semantic classification. University of Cambridge.
Lua i Stíl Chicago (17ú heag.)Needham, K. S. Synonymy and Semantic Classification. University of Cambridge, 1964.
Lua MLA (8ú heag.)Needham, K. S. Synonymy and Semantic Classification. University of Cambridge, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.