APA (7th ed.) Zitazioa

World Health Organization, Regional Office for Europe, Becker, W., & Helsing, E. (1991). Food and health data: Their use in nutrition policy-making.

Chicago Style (17th ed.) Zitazioa

World Health Organization, Regional Office for Europe, W. Becker, eta E. Helsing. Food and Health Data: Their Use in Nutrition Policy-making. 1991.

MLA (9th ed.) Zitazioa

World Health Organization, et al. Food and Health Data: Their Use in Nutrition Policy-making. 1991.