APA (7th ed.) Zitazioa
Current, D., Lutz, E., & Scherr, S. J. The Costs and benefits of agroforestry to farmers.
Chicago Style (17th ed.) Zitazioa
Current, Dean, Ernst Lutz, eta Sara J. Scherr. The Costs and Benefits of Agroforestry to Farmers.
MLA (9th ed.) Zitazioa
Current, Dean, et al. The Costs and Benefits of Agroforestry to Farmers.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.