Dyfyniad APA

Robbins, L. (1952). An Essay on the nature and significance of economic science. London: MacMillan and Co., Limited.

Dyfyniad Arddull Chicago

Robbins, Lionel. An Essay On the Nature and Significance of Economic Science. London: MacMillan and Co., Limited, 1952.

Dyfyniad MLA

Robbins, Lionel. An Essay On the Nature and Significance of Economic Science. London: MacMillan and Co., Limited, 1952.

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