APA (7th ed.) Citation

Post, P., & Post, E. (2004). Emily Post's Etiquette (17th ed.). HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Post, Peggy, and Emily Post. Emily Post's Etiquette. 17th ed. New York: HarperCollins Publishers, 2004.

MLA (9th ed.) Citation

Post, Peggy, and Emily Post. Emily Post's Etiquette. 17th ed. HarperCollins Publishers, 2004.