APA (7th ed.) Citation

Sigourney, L. H. (1839). Letters to mothers (2. ed.). Harper.

Chicago Style (17th ed.) Citation

Sigourney, Lydia Howard. Letters to Mothers. 2. ed. New York: Harper, 1839.

MLA (9th ed.) Citation

Sigourney, Lydia Howard. Letters to Mothers. 2. ed. Harper, 1839.