Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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