APA (7th ed.) Citation

Post, E. L., & Post, E. (1967). The Emily Post book of etiquette for young people. Funk & Wagnalls.

Chicago Style (17th ed.) Citation

Post, Elizabeth L., and Emily Post. The Emily Post Book of Etiquette for Young People. New York: Funk & Wagnalls, 1967.

MLA (9th ed.) Citation

Post, Elizabeth L., and Emily Post. The Emily Post Book of Etiquette for Young People. Funk & Wagnalls, 1967.