APA (7th ed.) Citation

Humbert, P., & Colombo, S. (1949). Introduction mathematique a l'etude des theories electromagnetiques. Gauthier-Villars.

Chicago Style (17th ed.) Citation

Humbert, Pierre, and Serge Colombo. Introduction Mathematique a L'etude Des Theories Electromagnetiques. Paris: Gauthier-Villars, 1949.

MLA (9th ed.) Citation

Humbert, Pierre, and Serge Colombo. Introduction Mathematique a L'etude Des Theories Electromagnetiques. Gauthier-Villars, 1949.

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