Cita APA (7a ed.)

Webb, S., & Webb, B. P. (1920). The history of trade unionism (Rev. ed, extended to 1920.). Longmans, Green, and Co.

Cita Chicago Style (17a ed.)

Webb, Sidney, y Beatrice Potter Webb. The History of Trade Unionism. Rev. ed, extended to 1920. London [etc.]: Longmans, Green, and Co, 1920.

Cita MLA (9a ed.)

Webb, Sidney, y Beatrice Potter Webb. The History of Trade Unionism. Rev. ed, extended to 1920. Longmans, Green, and Co, 1920.