Lua APA (7ú heag.)

Langan, J. (2001). Sentence skills with readings (second edition.). McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Langan, John. Sentence Skills with Readings. second edition. Boston: McGraw-Hill, 2001.

Lua MLA (8ú heag.)

Langan, John. Sentence Skills with Readings. second edition. McGraw-Hill, 2001.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.