APA (7th ed.) Citation

Post, E., & Post, E. L. (1969). Etiquette (12th rev. ed.). Funk & Wagnalls.

Chicago Style (17th ed.) Citation

Post, Emily, and Elizabeth L. Post. Etiquette. 12th rev. ed. New York: Funk & Wagnalls, 1969.

MLA (9th ed.) Citation

Post, Emily, and Elizabeth L. Post. Etiquette. 12th rev. ed. Funk & Wagnalls, 1969.