Dyfyniad APA

Sjo,John. (1976). Economics for agriculturalists: Beginning text in agricultural economics. Grid.

Dyfyniad Arddull Chicago

Sjo,John. Economics for Agriculturalists: Beginning Text in Agricultural Economics. Olivo: Grid, 1976.

Dyfyniad MLA

Sjo,John. Economics for Agriculturalists: Beginning Text in Agricultural Economics. Grid, 1976.

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