Dyfyniad APA

Thirkettle, G. (1968). Advanced economics. Macdonald R Evans.

Dyfyniad Arddull Chicago

Thirkettle, G.L. Advanced Economics. London: Macdonald R Evans, 1968.

Dyfyniad MLA

Thirkettle, G.L. Advanced Economics. Macdonald R Evans, 1968.

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