APA (7th ed.) Citation

Pliny, t. Y., & Radice, B. (1963). The letters of the Younger Pliny. Penguin Books.

Chicago Style (17th ed.) Citation

Pliny, the Younger, and Betty Radice. The Letters of the Younger Pliny. Baltimore: Penguin Books, 1963.

MLA (9th ed.) Citation

Pliny, the Younger, and Betty Radice. The Letters of the Younger Pliny. Penguin Books, 1963.