Citazione APA

Iowa. Dept. of Agriculture. (1952). Annual Iowa year book of agriculture. Iowa Dept. of Agriculture.

Stile di citazione Chicago

Iowa. Dept. of Agriculture. Annual Iowa Year Book of Agriculture. [Des Moines]: Iowa Dept. of Agriculture, 1952.

Citazione MLA

Iowa. Dept. of Agriculture. Annual Iowa Year Book of Agriculture. Iowa Dept. of Agriculture, 1952.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.