Lua APA (7ú heag.)
Langford, B. Y. (2005). The etiquette edge: The unspoken rules for business success. AMACOM.
Lua i Stíl Chicago (17ú heag.)
Langford, Beverly Y. The Etiquette Edge: The Unspoken Rules for Business Success. New York: AMACOM, 2005.
Lua MLA (9ú heag.)
Langford, Beverly Y. The Etiquette Edge: The Unspoken Rules for Business Success. AMACOM, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.