APA-referens (7:e uppl.)

Passfield, S. J. W. (1950). The history of trade unionism ((Rev. ed. extended to 1920).). Longmans, Green and co.

Chicago-referens (17:e uppl.)

Passfield, Sidney James Webb. The History of Trade Unionism. (Rev. ed. extended to 1920). New York: Longmans, Green and co, 1950.

MLA-referens (9:e uppl.)

Passfield, Sidney James Webb. The History of Trade Unionism. (Rev. ed. extended to 1920). Longmans, Green and co, 1950.