APA (7th ed.) Citation

Cole, G. D. H. (1938). Socialism in Evolution. Penguin Books.

Chicago Style (17th ed.) Citation

Cole, G. D. H. Socialism in Evolution. Harmondsworth [u.a.]: Penguin Books, 1938.

MLA (8th ed.) Citation

Cole, G. D. H. Socialism in Evolution. Penguin Books, 1938.