APA (7th ed.) Citation

Post, P., Post, A., Post, L., Senning, D. P., Post, E., & Richter, J. (2011). Emily Post's etiquette: Manners for a new world (18th edition.). William Morrow.

Chicago Style (17th ed.) Citation

Post, Peggy, Anna Post, Lizzie Post, Daniel Post Senning, Emily Post, and Janice Richter. Emily Post's Etiquette: Manners for a New World. 18th edition. New York: William Morrow, 2011.

MLA (9th ed.) Citation

Post, Peggy, et al. Emily Post's Etiquette: Manners for a New World. 18th edition. William Morrow, 2011.