APA引文

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

Chicago Edition Citation

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

MLA引文

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

警告：这些引文格式不一定是100％准确.