APA (7th ed.) Citation

Appell, P. (1925). Henri Poincaré. Plon.

Chicago Style (17th ed.) Citation

Appell, Paul. Henri Poincaré. Paris: Plon, 1925.

MLA (9th ed.) Citation

Appell, Paul. Henri Poincaré. Plon, 1925.

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