Cita APA (7th ed.)

Post, E. L. (1990). Emily Post on business etiquette. Perennial Library/Harper & Row.

Cita Chicago (17th ed.)

Post, Elizabeth L. Emily Post on Business Etiquette. New York: Perennial Library/Harper & Row, 1990.

Cita MLA (9th ed.)

Post, Elizabeth L. Emily Post on Business Etiquette. Perennial Library/Harper & Row, 1990.