APA
World Health Organization, Food and Agriculture Organization of the United Nations, . (1989). Codex Alimentarius Commission: procedural manual. Geneva: WHO.
Chicago
World Health Organization, Food and Agriculture Organization of the United Nations, . 1989. Codex Alimentarius Commission: procedural manual. Geneva: WHO.
Harvard
World Health Organization, Food and Agriculture Organization of the United Nations, . (1989). Codex Alimentarius Commission: procedural manual. Geneva: WHO.
MLA
World Health Organization, Food and Agriculture Organization of the United Nations, . Codex Alimentarius Commission: procedural manual. Geneva: WHO. 1989.