Guillaume De Greef : : the social theory of an early syndicalist.

MLA

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

APA

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

Chicago

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