Citazione Stile APA (7a Edizione)

Wolff Douglas, D. (1925). Guillaume De Greef: The social theory of an early syndicalist. New York: Columbia University.

Citazione stile Chigago Style (17a edizione)

Wolff Douglas, Dorothy. Guillaume De Greef: The Social Theory of an Early Syndicalist. New York: Columbia University, 1925.

Citatione MLA (8a ed.)

Wolff Douglas, Dorothy. Guillaume De Greef: The Social Theory of an Early Syndicalist. New York: Columbia University, 1925.