McGregor, W. B. (1997). Semiotic grammar. Clarendon Press.
Lua i Stíl Chicago (17ú heag.)McGregor, William B. Semiotic Grammar. Oxford: Clarendon Press, 1997.
Lua MLA (9ú heag.)McGregor, William B. Semiotic Grammar. Clarendon Press, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.