APA (7th ed.) Zitazioa

Research Institute of Agricultural Economics & Popp, J. (2008). Studies in agricultural economics: No. 108.

Chicago Style (17th ed.) Zitazioa

Research Institute of Agricultural Economics eta Jozsef Popp. Studies in Agricultural Economics: No. 108. 2008.

MLA (9th ed.) Zitazioa

Research Institute of Agricultural Economics eta Jozsef Popp. Studies in Agricultural Economics: No. 108. 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.