APA (7th ed.) Citation

Penrose, J., Mitchell, B., & Penrose, H. (1983). Letters from Bath: 1766-1767.

Chicago Style (17th ed.) Citation

Penrose, John, Brigitte Mitchell, and Hubert Penrose. Letters from Bath: 1766-1767. Gloucester, 1983.

MLA (9th ed.) Citation

Penrose, John, et al. Letters from Bath: 1766-1767. 1983.