APA (7th ed.) Citation

Post, E. L., & Post, E. (1987). Emily Post on entertaining. Perennial Library.

Chicago Style (17th ed.) Citation

Post, Elizabeth L., and Emily Post. Emily Post on Entertaining. New York: Perennial Library, 1987.

MLA (9th ed.) Citation

Post, Elizabeth L., and Emily Post. Emily Post on Entertaining. Perennial Library, 1987.