APA (7th ed.) Citation

Webb, B., & Webb, S. The history of trade unionism / by Sidney and Beatrice Webb. New York : Longmans, 1920.

Chicago Style (17th ed.) Citation

Webb, Beatrice, and Sidney Webb. The History of Trade Unionism / by Sidney and Beatrice Webb. New York : Longmans, 1920.

MLA (8th ed.) Citation

Webb, Beatrice, and Sidney Webb. The History of Trade Unionism / by Sidney and Beatrice Webb. New York : Longmans, 1920.