Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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