Cita APA (7a ed.)

Gilbert, W., Galilei, G., & Harvey, W. (1977). On the loadstone and magnetic bodies. Concerning the two new sciences. On the motion of the heart and blood in animals. Encyclopaedia Britannica.

Cita Chicago Style (17a ed.)

Gilbert, William, Galileo Galilei, y William Harvey. On the Loadstone and Magnetic Bodies. Concerning the Two New Sciences. On the Motion of the Heart and Blood in Animals. Chicago: Encyclopaedia Britannica, 1977.

Cita MLA (8a ed.)

Gilbert, William, et al. On the Loadstone and Magnetic Bodies. Concerning the Two New Sciences. On the Motion of the Heart and Blood in Animals. Encyclopaedia Britannica, 1977.