APA (7th ed.) Citation

Gilbert, W., Galilei, G., & Harvey, W. (1996). On the loadstone and magnetic bodies (2nd ed., 6th pr.). Encyclopedia Britannica.

Chicago Style (17th ed.) Citation

Gilbert, William, Galileo Galilei, and William Harvey. On the Loadstone and Magnetic Bodies. 2nd ed., 6th pr. Chicago [etc.]: Encyclopedia Britannica, 1996.

MLA (9th ed.) Citation

Gilbert, William, et al. On the Loadstone and Magnetic Bodies. 2nd ed., 6th pr. Encyclopedia Britannica, 1996.