APA (7th ed.) Citation

Lyell, C., & Secord, J. A. (1997). Principles of geology / Charles Lyell ; edited and with an introduction by James A. Secord. Penguin.

Chicago Style (17th ed.) Citation

Lyell, Charles, and James A. Secord. Principles of Geology / Charles Lyell ; Edited and with an Introduction by James A. Secord. London: Penguin, 1997.

MLA (9th ed.) Citation

Lyell, Charles, and James A. Secord. Principles of Geology / Charles Lyell ; Edited and with an Introduction by James A. Secord. Penguin, 1997.

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