FAO. (1988). FAO conservation guide N.13.3: Watershed management field manual: slope treatment measures and practices. Rome: FAO.
استشهاد بنمط شيكاغوFAO. FAO Conservation Guide N.13.3: Watershed Management Field Manual: Slope Treatment Measures and Practices. Rome: FAO, 1988.
MLA استشهادFAO. FAO Conservation Guide N.13.3: Watershed Management Field Manual: Slope Treatment Measures and Practices. Rome: FAO, 1988.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.