APA aipamena

World Bank. (1981). Agricultural research: Sector policy paper June 1981. World Bank.

Chicago Style aipamena

World Bank. Agricultural Research: Sector Policy Paper June 1981. Washington,D C: World Bank, 1981.

MLA aipamena

World Bank. Agricultural Research: Sector Policy Paper June 1981. World Bank, 1981.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.