Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. (2002). Rural America. U.S. Department of Agriculture, Economic Research Service.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. Rural America. Washington: U.S. Department of Agriculture, Economic Research Service, 2002.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. Rural America. U.S. Department of Agriculture, Economic Research Service, 2002.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.