APA (7th ed.) Citation

Webb, S., & Webb, B. (1902). Problems of modern industry (New ed.). Longmans, Green.

Chicago Style (17th ed.) Citation

Webb, Sidney, and Beatrice Webb. Problems of Modern Industry. New ed. London, New York: Longmans, Green, 1902.

MLA (9th ed.) Citation

Webb, Sidney, and Beatrice Webb. Problems of Modern Industry. New ed. Longmans, Green, 1902.