APA (7th ed.) Citation

Poincaré, L. (1971). Henri Poincaré.

Chicago Style (17th ed.) Citation

Poincaré, Léon. Henri Poincaré. 1971.

MLA (9th ed.) Citation

Poincaré, Léon. Henri Poincaré. 1971.

Warning: These citations may not always be 100% accurate.