Dyfyniad APA

Wiebers, U. (1992). Economic and environmental effects of pest management information and pesticides: The case of processing tomatoes in California. s.n.].

Dyfyniad Arddull Chicago

Wiebers, Uwe-Carsten. Economic and Environmental Effects of Pest Management Information and Pesticides: The Case of Processing Tomatoes in California. [S.l.: s.n.], 1992.

Dyfyniad MLA

Wiebers, Uwe-Carsten. Economic and Environmental Effects of Pest Management Information and Pesticides: The Case of Processing Tomatoes in California. s.n.], 1992.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.