APA aipamena

Bruce L. Gardner and Gordon C. Rausser. (2002). Agricultural and Food Policy. ELSEVIER.

Chicago Style aipamena

Bruce L. Gardner and Gordon C. Rausser. Agricultural and Food Policy. ELSEVIER, 2002.

MLA aipamena

Bruce L. Gardner and Gordon C. Rausser. Agricultural and Food Policy. ELSEVIER, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.