Dyfyniad APA

Marshall, A. (1964). Princíples of economics. Macmillian and company.

Dyfyniad Arddull Chicago

Marshall, Alfred. Princíples of Economics. London: Macmillian and company, 1964.

Dyfyniad MLA

Marshall, Alfred. Princíples of Economics. Macmillian and company, 1964.

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