Não informado. (1990). Language Acquisition. Lawrence Erlbaum Associates.
Lua i Stíl Chicago (17ú heag.)Não informado. Language Acquisition. Hillsdale, NJ: Lawrence Erlbaum Associates, 1990.
Lua MLA (8ú heag.)Não informado. Language Acquisition. Lawrence Erlbaum Associates, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.