APA استشهاد

David Norman. (1994). FAO farm systems management series N.7: Farming systems development and soil conservation. Rome: FAO.

استشهاد بنمط شيكاغو

David Norman. FAO Farm Systems Management Series N.7: Farming Systems Development and Soil Conservation. Rome: FAO, 1994.

MLA استشهاد

David Norman. FAO Farm Systems Management Series N.7: Farming Systems Development and Soil Conservation. Rome: FAO, 1994.

تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.