Dyfyniad APA

Oswald,Andrew J. (1991). Surveys in economics. Basil Black Well.

Dyfyniad Arddull Chicago

Oswald,Andrew J. Surveys in Economics. USA: Basil Black Well, 1991.

Dyfyniad MLA

Oswald,Andrew J. Surveys in Economics. Basil Black Well, 1991.

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