Dyfyniad APA

Friedman, M. (1953). Essays in positive economics. Chicago: The University of Chicago Press.

Dyfyniad Arddull Chicago

Friedman, Milton. Essays in Positive Economics. Chicago: The University of Chicago Press, 1953.

Dyfyniad MLA

Friedman, Milton. Essays in Positive Economics. Chicago: The University of Chicago Press, 1953.

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