APA (7th ed.) Citation

Loria, A., Paul, E., & Paul, C. (1920). Karl Marx. G. Allen & Unwin ltd.

Chicago Style (17th ed.) Citation

Loria, Achille, Eden Paul, and Cedar Paul. Karl Marx. London: G. Allen & Unwin ltd, 1920.

MLA (9th ed.) Citation

Loria, Achille, et al. Karl Marx. G. Allen & Unwin ltd, 1920.

Warning: These citations may not always be 100% accurate.