APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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