APA (7th ed.) Citation

Food and Agriculture Organization of the United Nations. Fertilizer and Plant Nutrition Service. (1981). Crop production levels and fertilizer use. Food and Agriculture Organization of the United Nations.

Chicago Style (17th ed.) Citation

Food and Agriculture Organization of the United Nations. Fertilizer and Plant Nutrition Service. Crop Production Levels and Fertilizer Use. Rome: Food and Agriculture Organization of the United Nations, 1981.

MLA (9th ed.) Citation

Food and Agriculture Organization of the United Nations. Fertilizer and Plant Nutrition Service. Crop Production Levels and Fertilizer Use. Food and Agriculture Organization of the United Nations, 1981.