APA (7th ed.) Citation

Beecher, C. E. (1855). Letters to the people on health and happiness. Harper.

Chicago Style (17th ed.) Citation

Beecher, Catharine Esther. Letters to the People on Health and Happiness. New York: Harper, 1855.

MLA (9th ed.) Citation

Beecher, Catharine Esther. Letters to the People on Health and Happiness. Harper, 1855.