APA (7th ed.) Citation

Bird, I. L., Chubbuck, K., & Bird, H. A. (2003). Letters to Henrietta. Northeastern University Press.

Chicago Style (17th ed.) Citation

Bird, Isabella L., Kay Chubbuck, and Henrietta Amelia Bird. Letters to Henrietta. Boston: Northeastern University Press, 2003.

MLA (9th ed.) Citation

Bird, Isabella L., et al. Letters to Henrietta. Northeastern University Press, 2003.