Lua APA (7ú heag.)

Langan, J. (2003). Sentence skills: A workbook for writers : form A (7th ed.). McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Langan, John. Sentence Skills: A Workbook for Writers : Form A. 7th ed. Boston: McGraw-Hill, 2003.

Lua MLA (8ú heag.)

Langan, John. Sentence Skills: A Workbook for Writers : Form A. 7th ed. McGraw-Hill, 2003.

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