APA (7th ed.) Citation

Labriola, A., & Kerr, C. H. (1904). Essays on the materialistic conception of history. Charles H. Kerr & Company.

Chicago Style (17th ed.) Citation

Labriola, Antonio, and Charles H. Kerr. Essays on the Materialistic Conception of History. Chicago: Charles H. Kerr & Company, 1904.

MLA (9th ed.) Citation

Labriola, Antonio, and Charles H. Kerr. Essays on the Materialistic Conception of History. Charles H. Kerr & Company, 1904.