Cita APA (7th ed.)

Labriola, A. (1908). Essays on the materialistic conception of history. C.H. Kerr & Company.

Cita Chicago (17th ed.)

Labriola, Antonio. Essays on the Materialistic Conception of History. Chicago: C.H. Kerr & Company, 1908.

Cita MLA (9th ed.)

Labriola, Antonio. Essays on the Materialistic Conception of History. C.H. Kerr & Company, 1908.