Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Gilbert, William, Galileo Galilei, y William Harvey. On the Loadstone and Magnetic Bodies. 2nd ed., 6th print. Chicago: Encyclopædia Britannica, 1996.

Cita MLA (9a ed.)

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