APA (7th ed.) Citation

Marx, K., Engels, F., & Lenin, V. I. (1960). The essential left : four classic texts on the principles of socialism / [by] Marx, Engels, [and] Lenin: Four classic texts on the principles of socialism. Unwin.

Chicago Style (17th ed.) Citation

Marx, Karl, Friedrich Engels, and V. I. Lenin. The Essential Left : Four Classic Texts on the Principles of Socialism / [by] Marx, Engels, [and] Lenin: Four Classic Texts on the Principles of Socialism. London: Unwin, 1960.

MLA (9th ed.) Citation

Marx, Karl, et al. The Essential Left : Four Classic Texts on the Principles of Socialism / [by] Marx, Engels, [and] Lenin: Four Classic Texts on the Principles of Socialism. Unwin, 1960.

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