FAO. (2003). Data sets, indicators and methods to assess land degradation in drylands: Report of the LADA e-mail conference 9 Ôctber - 4 November 2002. Rome, Italy: FAO.
استشهاد بنمط شيكاغوFAO. Data Sets, Indicators and Methods to Assess Land Degradation in Drylands: Report of the LADA E-mail Conference 9 Ôctber - 4 November 2002. Rome, Italy: FAO, 2003.
MLA استشهادFAO. Data Sets, Indicators and Methods to Assess Land Degradation in Drylands: Report of the LADA E-mail Conference 9 Ôctber - 4 November 2002. Rome, Italy: FAO, 2003.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.