APA (7th ed.) Citation

Post, E. P., & Post, E. L. (1965). Emily Post's Etiquette. Funk & Wagnalls.

Chicago Style (17th ed.) Citation

Post, Emily Price, and Elizabeth L. Post. Emily Post's Etiquette. New York: Funk & Wagnalls, 1965.

MLA (9th ed.) Citation

Post, Emily Price, and Elizabeth L. Post. Emily Post's Etiquette. Funk & Wagnalls, 1965.