FAO. (1974). Otter board design and performance. Food and Agriculture Organization of the United Nations.
Citazione stile Chigago Style (17a edizione)FAO. Otter Board Design and Performance. Roma: Food and Agriculture Organization of the United Nations, 1974.
Citatione MLA (9a ed.)FAO. Otter Board Design and Performance. Food and Agriculture Organization of the United Nations, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.