Lua APA (7ú heag.)

(1988). Handbook Business Letters/Roy W. Poe. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Handbook Business Letters/Roy W. Poe. McGraw-Hill, 1988.

Lua MLA (8ú heag.)

Handbook Business Letters/Roy W. Poe. McGraw-Hill, 1988.

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