APA (7th ed.) Citation

Marx, K., Engels, F., Cain, M. E., & Hunt, A. (1979). Marx and Engels on law. Academic Press.

Chicago Style (17th ed.) Citation

Marx, Karl, Friedrich Engels, Maureen E. Cain, and Alan Hunt. Marx and Engels on Law. Academic Press, 1979.

MLA (9th ed.) Citation

Marx, Karl, et al. Marx and Engels on Law. Academic Press, 1979.