APA (7th ed.) Citation

Webb, S., & Webb, B. P. (1923). The decay of capitalist civilization. Fabian Society [u.a.].

Chicago Style (17th ed.) Citation

Webb, Sidney, and Beatrice Potter Webb. The Decay of Capitalist Civilization. Westminster [u.a.]: Fabian Society [u.a.], 1923.

MLA (9th ed.) Citation

Webb, Sidney, and Beatrice Potter Webb. The Decay of Capitalist Civilization. Fabian Society [u.a.], 1923.