Selected writings / / Engels ; edited and introduced by W.O. Henderson.

MLA

Engels, Friedrich, and W.O Henderson. Selected Writings. Harmondsworth: Penguin Books, 1967.

APA

Engels, F., & Henderson, W. (1967). Selected writings. Harmondsworth: Penguin Books.

Chicago

Engels, Friedrich, and W.O Henderson. Selected Writings. Harmondsworth: Penguin Books, 1967.