APA (7th ed.) Citation

Gainot, B. Georges Lefebvre, Quatre-vingt-neuf. Association Paul Langevin.

Chicago Style (17th ed.) Citation

Gainot, Bernard. Georges Lefebvre, Quatre-vingt-neuf. Association Paul Langevin.

MLA (9th ed.) Citation

Gainot, Bernard. Georges Lefebvre, Quatre-vingt-neuf. Association Paul Langevin.

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