Dyfyniad APA

Duncan, E. R. (1977). Dimensions of world food problems. IOWA State University Press.

Dyfyniad Arddull Chicago

Duncan, E R. Dimensions of World Food Problems. USA: IOWA State University Press, 1977.

Dyfyniad MLA

Duncan, E R. Dimensions of World Food Problems. IOWA State University Press, 1977.

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