APA (7th ed.) Citation

Pliny, t. Y., Keil, H., & Firth, J. B. (2002). The Letters of the Younger Pliny, First Series - Volume 1. Project Gutenberg.

Chicago Style (17th ed.) Citation

Pliny, the Younger, Heinrich Keil, and John B. Firth. The Letters of the Younger Pliny, First Series - Volume 1. Project Gutenberg, 2002.

MLA (9th ed.) Citation

Pliny, the Younger, et al. The Letters of the Younger Pliny, First Series - Volume 1. Project Gutenberg, 2002.

Warning: These citations may not always be 100% accurate.