APA

Dulles F. R., . (1949). Labor in America: a history. New York: Crowell Co.

Chicago

Dulles Foster Rhea, . 1949. Labor in America: a history. New York: Crowell Co.

Harvard

Dulles F. R., . (1949). Labor in America: a history. New York: Crowell Co.

MLA

Dulles Foster Rhea, . Labor in America: a history. New York: Crowell Co. 1949.