Παραπομπή σε μορφή APA (7η εκδ.)

Iowa Crop and Livestock Reporting Service & Iowa Agricultural Statistics. Iowa crop report. The Service.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Iowa Crop and Livestock Reporting Service και Iowa Agricultural Statistics. Iowa Crop Report. [Des Moines, Iowa]: The Service.

Παραπομπή σε μορφή MLA (8th εκδ.)

Iowa Crop and Livestock Reporting Service και Iowa Agricultural Statistics. Iowa Crop Report. The Service.