Cita APA (7a ed.)

Bourgin, H. (1901). Proudhon. Librairie Georges Bellais.

Cita Chicago Style (17a ed.)

Bourgin, Hubert. Proudhon. Paris: Librairie Georges Bellais, 1901.

Cita MLA (9a ed.)

Bourgin, Hubert. Proudhon. Librairie Georges Bellais, 1901.