APA (7th ed.) Citation

Marx, K., Longuet, C., & Bernstein, E. (1912). Salaires, prix, profits.

Chicago Style (17th ed.) Citation

Marx, Karl, Charles Longuet, and Eduard Bernstein. Salaires, Prix, Profits. 1912.

MLA (8th ed.) Citation

Marx, Karl, et al. Salaires, Prix, Profits. 1912.