APA

Silk L. S., . (1970). Readings in contemporary economics. New York: McGraw-Hill.

Chicago

Silk Leonard Solomon, . 1970. Readings in contemporary economics. New York: McGraw-Hill.

Harvard

Silk L. S., . (1970). Readings in contemporary economics. New York: McGraw-Hill.

MLA

Silk Leonard Solomon, . Readings in contemporary economics. New York: McGraw-Hill. 1970.