APA

Bergel E. E., . (1962). Social stratification. New York: McGraw-Hill.

Chicago

Bergel Egon Ernest, . 1962. Social stratification. New York: McGraw-Hill.

Harvard

Bergel E. E., . (1962). Social stratification. New York: McGraw-Hill.

MLA

Bergel Egon Ernest, . Social stratification. New York: McGraw-Hill. 1962.