APA

Dunlop J. T., Galenson W., . (1978). Labor in the twentieth century. New York: Academic Press.

Chicago

Dunlop John Thomas, Galenson Walter, . 1978. Labor in the twentieth century. New York: Academic Press.

Harvard

Dunlop J. T., Galenson W., . (1978). Labor in the twentieth century. New York: Academic Press.

MLA

Dunlop John Thomas, Galenson Walter, . Labor in the twentieth century. New York: Academic Press. 1978.