APA (7th ed.) Citation

Langford, B. Y. (2005). The etiquette edge: The unspoken rules for business success. AMACOM, American Management Association.

Chicago Style (17th ed.) Citation

Langford, Beverly Y. The Etiquette Edge: The Unspoken Rules for Business Success. New York: AMACOM, American Management Association, 2005.

MLA (9th ed.) Citation

Langford, Beverly Y. The Etiquette Edge: The Unspoken Rules for Business Success. AMACOM, American Management Association, 2005.