Svartvik, J. (1966). On voice in the English verb. Mouton.
Lua i Stíl Chicago (17ú heag.)Svartvik, Jan. On Voice in the English Verb. The Hague: Mouton, 1966.
Lua MLA (8ú heag.)Svartvik, Jan. On Voice in the English Verb. Mouton, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.