APA (7th ed.) Citation

Douglas, D. W. (1925). Guillaume de Greef: The social theory of an early syndicalist. Columbia university; [etc., etc.].

Chicago Style (17th ed.) Citation

Douglas, Dorothy W. Guillaume De Greef: The Social Theory of an Early Syndicalist. New York: Columbia university; [etc., etc.], 1925.

MLA (9th ed.) Citation

Douglas, Dorothy W. Guillaume De Greef: The Social Theory of an Early Syndicalist. Columbia university; [etc., etc.], 1925.