APA (7th ed.) Citation

Feuerbach, L., Marx, K., Engels, F., & Schirmacher, W. (1997). German socialist philosophy. Continuum.

Chicago Style (17th ed.) Citation

Feuerbach, Ludwig, Karl Marx, Friedrich Engels, and Wolfgang Schirmacher. German Socialist Philosophy. New York: Continuum, 1997.

MLA (9th ed.) Citation

Feuerbach, Ludwig, et al. German Socialist Philosophy. Continuum, 1997.