FAO. (2004). Photo library on soil erosion processes =: Photothèque des processus d'erosion do sol. Rome: Food and Agriculture Organization of the United Nations.
استشهاد بنمط شيكاغوFAO. Photo Library On Soil Erosion Processes =: Photothèque Des Processus D'erosion Do Sol. Rome: Food and Agriculture Organization of the United Nations, 2004.
MLA استشهادFAO. Photo Library On Soil Erosion Processes =: Photothèque Des Processus D'erosion Do Sol. Rome: Food and Agriculture Organization of the United Nations, 2004.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.