APA

Friedman M., . (1966). Essays in positive economics. Chicago: The University of Chicago Press.

Chicago

Friedman Milton, . 1966. Essays in positive economics. Chicago: The University of Chicago Press.

Harvard

Friedman M., . (1966). Essays in positive economics. Chicago: The University of Chicago Press.

MLA

Friedman Milton, . Essays in positive economics. Chicago: The University of Chicago Press. 1966.