APA (7th ed.) Citation

Webb, S., & Webb, B. P. (1920). Problems of modern industry (New edition, fifth thousand.). Longmans, Green and Co.

Chicago Style (17th ed.) Citation

Webb, Sidney, and Beatrice Potter Webb. Problems of Modern Industry. New edition, fifth thousand. New York: Longmans, Green and Co, 1920.

MLA (9th ed.) Citation

Webb, Sidney, and Beatrice Potter Webb. Problems of Modern Industry. New edition, fifth thousand. Longmans, Green and Co, 1920.