Dyfyniad APA

Seitz, W. D. (1994). Economics of resources, agriculture and food. New York: McGraw-Hill.

Dyfyniad Arddull Chicago

Seitz, Wesley D. Economics of Resources, Agriculture and Food. New York: McGraw-Hill, 1994.

Dyfyniad MLA

Seitz, Wesley D. Economics of Resources, Agriculture and Food. New York: McGraw-Hill, 1994.

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