Richardson, G. (1983). Teaching modern languages. Croom Helm.
Lua i Stíl Chicago (17ú heag.)Richardson, G. Teaching Modern Languages. London: Croom Helm, 1983.
Lua MLA (9ú heag.)Richardson, G. Teaching Modern Languages. Croom Helm, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.