APA (7th ed.) Citation

Post, E. (1945). Etiquette: The blue book of social usage (New ed.). Funk & Wagnalls.

Chicago Style (17th ed.) Citation

Post, Emily. Etiquette: The Blue Book of Social Usage. New ed. New York: Funk & Wagnalls, 1945.

MLA (9th ed.) Citation

Post, Emily. Etiquette: The Blue Book of Social Usage. New ed. Funk & Wagnalls, 1945.