APA (7th ed.) Citation

Poincaré, H. (1996). Natural science: Selections from the twentieth-century (2nd ed., 6th print.). Encyclopædia Britannica.

Chicago Style (17th ed.) Citation

Poincaré, Henri. Natural Science: Selections from the Twentieth-century. 2nd ed., 6th print. Chicago: Encyclopædia Britannica, 1996.

MLA (9th ed.) Citation

Poincaré, Henri. Natural Science: Selections from the Twentieth-century. 2nd ed., 6th print. Encyclopædia Britannica, 1996.