McCalla, A. F., & Josling, T. E. (1985). Agricultural policies and world markets. Macmillan.
Chicago Style aipamenaMcCalla, Alex F., and Timothy Edward Josling. Agricultural Policies and World Markets. New York: Macmillan, 1985.
MLA aipamenaMcCalla, Alex F., and Timothy Edward Josling. Agricultural Policies and World Markets. Macmillan, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.