Lua APA (7ú heag.)

Gartside , L. (1992). Model business letters (ELBS) (4th.). Pitman.

Lua i Stíl Chicago (17ú heag.)

Gartside , L. Model Business Letters (ELBS). 4th. London: Pitman, 1992.

Lua MLA (9ú heag.)

Gartside , L. Model Business Letters (ELBS). 4th. Pitman, 1992.

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