APA (7th ed.) Citation

Say, L. (1891). Economie sociale (2. ed.). Librairie Guillaumin.

Chicago Style (17th ed.) Citation

Say, Leon. Economie Sociale. 2. ed. Paris: Librairie Guillaumin, 1891.

MLA (9th ed.) Citation

Say, Leon. Economie Sociale. 2. ed. Librairie Guillaumin, 1891.