FAO. (2004). Conservation of natural resources for sustainable agriculture: Training modules. Rome: Food and Agriculture Organization of the United Nations.
استشهاد بنمط شيكاغوFAO. Conservation of Natural Resources for Sustainable Agriculture: Training Modules. Rome: Food and Agriculture Organization of the United Nations, 2004.
MLA استشهادFAO. Conservation of Natural Resources for Sustainable Agriculture: Training Modules. Rome: Food and Agriculture Organization of the United Nations, 2004.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.