APA (7th ed.) Citation

Le Play, F., & Auburtin, F. Economie sociale. Guillaumin (Paris).

Chicago Style (17th ed.) Citation

Le Play, Frédéric, and Fernand Auburtin. Economie Sociale. Guillaumin (Paris).

MLA (8th ed.) Citation

Le Play, Frédéric, and Fernand Auburtin. Economie Sociale. Guillaumin (Paris).

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