Dyfyniad APA

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

Dyfyniad Arddull Chicago

Friedman, Milton,1912-. Essays in Positive Economics. Chicago: University of Chicago, 1966.

Dyfyniad MLA

Friedman, Milton,1912-. Essays in Positive Economics. University of Chicago, 1966.

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